Find the fourth proportional to 12,2and 3-714 – InterviewSolution

1.	Find the fourth proportional to 12,2and 3-714
Answer» suppose fourth proportional is x now 1 5/7 = 12/7 2 3/14 = 31/14 3 3/5 = 18/5 so 31/14 * 18/5 = 12/7 * x so x= (31×18×7)/(14×5×12) = (31×6)/(2×5×4) = 93/20

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