Solving Proportion Problems

Question 1:

x and y are in inverse proportion. When x = 5, y = 90, find y when
x = 9.

50

Question 2:

x and y are in inverse proportion. When x = 3, y = 56, find y when
x = 4.

42

Question 3:

x and y are in inverse proportion. When x = 4, y = 49, find y when
x = 7.

28

Question 4:

x and y are in inverse proportion. When x = 7, y = 48, find y when
x = 6.

56