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Finding the Fourth Proportional to 658.86, 908.72 and 481.80

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Solution

The fourth proportional to 658.86, 908.72 and 481.80 is: 664.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    658.86 : 908.72 = 481.80 : x
  2. Step 2: Convert to fraction form
    658.86/908.72 = 481.80/x
  3. Step 3: Cross multiply
    658.86x = 908.72 × 481.80
  4. Step 4: Simplify right side
    658.86x = 437,821.30
  5. Step 5: Solve for x
    x = 437,821.30/658.86
  6. Step 6: Final answer
    x = 664.51

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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.