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# Category Archives: Variation and Proportion

## Combined Variation and Proportion example question

If z varies directly as the square root of x and inversely as y, and z = 5 when x = 3 and y = 12, find z when x = 27 and y = 5.

Solution to this Combined Variation and Proportion practice problem is provided in the video below!

## Joint Variation and Proportion example question

If z varies jointly as x and y, and z = 3 when x = 4 and y = 6, find z when x = 20 and y = 9.

Solution to this Joint Variation and Proportion practice problem is provided in the video below!

## Inverse Variation and Proportion example question

If y varies inversely as the square root of x, and y = 2 when x = , find y when x = 2.

Solution to this Inverse Variation and Proportion practice problem is provided in the video below!

## Direct Variation and Proportion example question

If y varies directly as the fourth power of x, and y = 2 when x = , find y when x = 2.

Solution to this Direct Variation and Proportion practice problem is provided in the video below!