Direct Proportion Definition

Definition: Direct proportion is the relationship between two variables when their ratio is equal to a constant value.

Examples: The volume of an ideal gas is directly proportional to the absolute temperature of the gas (Charles' Law)

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Helmenstine, Anne Marie, Ph.D. "Direct Proportion Definition." ThoughtCo, Jun. 13, 2014, thoughtco.com/definition-of-direct-proportion-605034. Helmenstine, Anne Marie, Ph.D. (2014, June 13). Direct Proportion Definition. Retrieved from https://www.thoughtco.com/definition-of-direct-proportion-605034 Helmenstine, Anne Marie, Ph.D. "Direct Proportion Definition." ThoughtCo. https://www.thoughtco.com/definition-of-direct-proportion-605034 (accessed January 21, 2018).