Fourth Proportional

The fourth proportional is any of the terms of a ratio.

Mean Proportional

A continued proportion has two equal means.

To calculate the proportional mean of a continued proportion, extract the square root from the product of the extremes.

Third Proportional

In a continued proportion, the third proportional is the variable in a proportion with two equal terms.

A third proportional is equal to the square of the equal terms, divided by the unequal term.

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Emma

I am passionate about travelling and currently live and work in Paris. I like to spend my time reading, gardening, running, learning languages and exploring new places.

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