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Finding the Fourth Proportional to 477.60, 658.98 and 330.54

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Solution

The fourth proportional to 477.60, 658.98 and 330.54 is: 456.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    477.60 : 658.98 = 330.54 : x
  2. Step 2: Convert to fraction form
    477.60/658.98 = 330.54/x
  3. Step 3: Cross multiply
    477.60x = 658.98 × 330.54
  4. Step 4: Simplify right side
    477.60x = 217,819.25
  5. Step 5: Solve for x
    x = 217,819.25/477.60
  6. Step 6: Final answer
    x = 456.07

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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.