In Mathematics and Physics
In mathematics and in physics, proportionality is a mathematical relation between two quantities; it can be expressed as an equality of two ratios:
Functionally, proportionality can be a relationship between variables in a mathematical equation. For example, given the following equation for the force of gravity (according to Newton):
the force of gravity between two masses is directly proportional to the product of the two masses and inversely proportional to the square of the distance between the two masses.
Read more about this topic: Proportional Reasoning
Famous quotes containing the words mathematics and/or physics:
“In mathematics he was greater
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—Samuel Butler (1612–1680)
“Mathematics should be mixed not only with physics but with ethics.”
—Henry David Thoreau (1817–1862)