Find the fourth proportional 2\1, 5\7, 14\15 – InterviewSolution

1.

Find the fourth proportional 2\1, 5\7, 14\15

Answer»

LET FOURTH PROPORTIONAL be m

2:5/7::14/15:m

now,

2*m=5/7*14/15

2*m 4/21

m=4/21*2

m=2/21

.:m=2/21(fourth proportional)

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