If 4, 8, x and 12 are in proportion, then what is the mean proportion between (x + 3) and (x + 30)?
18
Since 4, 8, x, 12 are in proportion, 4/8 = x/12, so x = 6.
Then x + 3 = 9 and x + 30 = 36.
Mean proportion between 9 and 36 = √(9 × 36) = √324 = 18.
Hence, the answer is 18.
Similar Questions
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Important Questions from Mean Proportional
- Find the mean proportional between 19 and 76.
- Find the mean proportional of 324 and 16.
- Find the mean proportional between 28 and 252.
- Find the mean proportional of 400 and 4.
- Find the mean proportional of 225 and 4.
