Question
If 'U' is the prime number 17, then find the fourth
proportion of (U + 3), (U - 7) and (U + 5).Solution
'U' = 17
So, the numbers are 20, 10 and 22.
Let fourth proportion be 'm'.
So, 20m = 10 × 22
Or, 20m = 220
Or, 'm' = 11
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