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

  • codebase (code base)

    - A codebase (sometimes spelled as two words, code base) is the complete body of source code for a given software program or application. (WhatIs.com)

  • hard error

    - A hard error is an issue in RAM that results from a permanent physical flaw in the module caused by a hardware failure or defect. (WhatIs.com)

  • soft error

    - A soft error is an issue that causes a temporary condition in RAM that alters stored data in an unintended way. Errors that change data stored in RAM are either soft errors or hard errors, which re... (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.