Question
If the mean proportion of 0.54 and 0.24 is 'x', then
find the third proportion of (x + 8.64) and (2x + 5.28) .Solution
ATQ,
'x' = √(0.54 × 0.24) = √0.1296 = 0.36
x + 8.64 = 0.36 + 8.64 = 9
2x + 5.28 = 2 × 0.36 + 5.28 = 6
Third proportion of two numbers 'a' and 'b' is (b²/a).
Required proportion = (6²/9) = 4
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