Home / 747.36-1,122-455.28

Finding the Fourth Proportional to 747.36, 1,122 and 455.28

Calculator

Solution

The fourth proportional to 747.36, 1,122 and 455.28 is: 683.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    747.36 : 1,122 = 455.28 : x
  2. Step 2: Convert to fraction form
    747.36/1,122 = 455.28/x
  3. Step 3: Cross multiply
    747.36x = 1,122 × 455.28
  4. Step 4: Simplify right side
    747.36x = 510,824.16
  5. Step 5: Solve for x
    x = 510,824.16/747.36
  6. Step 6: Final answer
    x = 683.50

Related Problems

Find fourth proportional to 373.68, 561 and 227.64
Half scale
Find fourth proportional to 1,494.72, 2,244 and 910.56
Double scale
Find fourth proportional to 748.36, 1,123.50 and 456.28
Similar ratio
Find fourth proportional to 1,121.04, 1,683 and 682.92
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.