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Finding the Fourth Proportional to 630.20, 940.24 and 560.90

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Solution

The fourth proportional to 630.20, 940.24 and 560.90 is: 836.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    630.20 : 940.24 = 560.90 : x
  2. Step 2: Convert to fraction form
    630.20/940.24 = 560.90/x
  3. Step 3: Cross multiply
    630.20x = 940.24 × 560.90
  4. Step 4: Simplify right side
    630.20x = 527,380.62
  5. Step 5: Solve for x
    x = 527,380.62/630.20
  6. Step 6: Final answer
    x = 836.85

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.