What is proportionality? - Definition from WhatIs.com
Part of the Computing fundamentals glossary:

In mathematics, proportionality indicates that two quantities or variables are related in a linear manner. If one quantity doubles in size, so does the other; if one of the variables diminishes to 1/10 of its former value, so does the other.

The symbol for proportionality resembles a stretched-out, lowercase Greek letter alpha ( ). When this symbol appears between two quantities or variables, it is read "is proportional to" or "varies in direct proportion with." Thus, the expression x y is read " x is proportional to y " or " x varies in direct proportion with y ." In this situation, as long as x and y do not attain values of zero, the quotient x / y is always equal to the same value k , which is called the proportionality constant.

Also see Mathematical Symbols .

This was last updated in September 2005
Posted by: Margaret Rouse

Related Terms

Definitions

  • compression

    - Compression reduces the size of data to save storage space or speed transmission. Learn how files are compressed and read about compression examples. (SearchStorage.com)

  • IS (information system or information services)

    - An information system (IS) is the collection of technical and human resources that provide the storage, computing, distribution, and communication for the information required by all or some part o... (WhatIs.com)

  • distributed

    - Computing is said to be "distributed" when the computer programming and data that computers work on are spread out over more than one computer, usually over a network.Cloud computing is a particula... (WhatIs.com)

Glossaries

  • Computing fundamentals

    - Terms related to computer fundamentals, including computer hardware definitions and words and phrases about software, operating systems, peripherals and troubleshooting.

  • Internet applications

    - This WhatIs.com glossary contains terms related to Internet applications, including definitions about Software as a Service (SaaS) delivery models and words and phrases about web sites, e-commerce ...

Ask a Question. Find an Answer.Powered by ITKnowledgeExchange.com

Ask An IT Question

Get answers from your peers on your most technical challenges

Ask Question

Tech TalkComment

Share
Comments

    Results

    Contribute to the conversation

    All fields are required. Comments will appear at the bottom of the article.