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Finding the Fourth Proportional to 629.52, 868.77 and 474

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Solution

The fourth proportional to 629.52, 868.77 and 474 is: 654.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    629.52 : 868.77 = 474 : x
  2. Step 2: Convert to fraction form
    629.52/868.77 = 474/x
  3. Step 3: Cross multiply
    629.52x = 868.77 × 474
  4. Step 4: Simplify right side
    629.52x = 411,796.98
  5. Step 5: Solve for x
    x = 411,796.98/629.52
  6. Step 6: Final answer
    x = 654.14

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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.