Question

12. Find the fourth proportional of the
following:
a) 1/3,1/9,1/12
by 16, 24,30​

Answer 1

a. 1/15

b. 30 + 4 = 34

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Answer 2

Step-by-step explanation:

a)1/3,1/9,1/12

fourth proportion--- a:b=c:d

a/b=c/d,d=cb/a

---1/12×1/9×3=1/36

b)16,24,30

-----24×30/16

=3×15=45