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Finding the Fourth Proportional to 626.61, 939.20 and 472.04

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Solution

The fourth proportional to 626.61, 939.20 and 472.04 is: 707.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    626.61 : 939.20 = 472.04 : x
  2. Step 2: Convert to fraction form
    626.61/939.20 = 472.04/x
  3. Step 3: Cross multiply
    626.61x = 939.20 × 472.04
  4. Step 4: Simplify right side
    626.61x = 443,332.91
  5. Step 5: Solve for x
    x = 443,332.91/626.61
  6. Step 6: Final answer
    x = 707.51

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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.