Home / 747-1,032-630.36

Finding the Fourth Proportional to 747, 1,032 and 630.36

Calculator

Solution

The fourth proportional to 747, 1,032 and 630.36 is: 870.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    747 : 1,032 = 630.36 : x
  2. Step 2: Convert to fraction form
    747/1,032 = 630.36/x
  3. Step 3: Cross multiply
    747x = 1,032 × 630.36
  4. Step 4: Simplify right side
    747x = 650,531.52
  5. Step 5: Solve for x
    x = 650,531.52/747
  6. Step 6: Final answer
    x = 870.86

Related Problems

Find fourth proportional to 373.50, 516 and 315.18
Half scale
Find fourth proportional to 1,494, 2,064 and 1,260.72
Double scale
Find fourth proportional to 748, 1,033.38 and 631.36
Similar ratio
Find fourth proportional to 1,120.50, 1,548 and 945.54
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.