What number should be added to each of the numbers 8, 21, 13 and 31 so that the resulting numbers in this order form a proportion?
15
21
13
5
8
8+x21+x=13+x31+x Solving we get x = 5
What number should be added to 2, 4, 7 so that resulting numbers are in continued proportion.
What should be added to each of the numbers 1, 21, and 121 so that the resulting numbers are in continued proportion? ___
What should be added to each of the numbers 1, 21 and 121 so that the resulting numbers are in continued proportion?