Home / 1,155.02-1,732.17-424.70

Finding the Fourth Proportional to 1,155.02, 1,732.17 and 424.70

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Solution

The fourth proportional to 1,155.02, 1,732.17 and 424.70 is: 636.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,155.02 : 1,732.17 = 424.70 : x
  2. Step 2: Convert to fraction form
    1,155.02/1,732.17 = 424.70/x
  3. Step 3: Cross multiply
    1,155.02x = 1,732.17 × 424.70
  4. Step 4: Simplify right side
    1,155.02x = 735,652.60
  5. Step 5: Solve for x
    x = 735,652.60/1,155.02
  6. Step 6: Final answer
    x = 636.92

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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.