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Finding the Fourth Proportional to 477, 658.26 and 339.24

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Solution

The fourth proportional to 477, 658.26 and 339.24 is: 468.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    477 : 658.26 = 339.24 : x
  2. Step 2: Convert to fraction form
    477/658.26 = 339.24/x
  3. Step 3: Cross multiply
    477x = 658.26 × 339.24
  4. Step 4: Simplify right side
    477x = 223,308.12
  5. Step 5: Solve for x
    x = 223,308.12/477
  6. Step 6: Final answer
    x = 468.15

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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.