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Finding the Fourth Proportional to 484.92, 727.11 and 354.78

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Solution

The fourth proportional to 484.92, 727.11 and 354.78 is: 531.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    484.92 : 727.11 = 354.78 : x
  2. Step 2: Convert to fraction form
    484.92/727.11 = 354.78/x
  3. Step 3: Cross multiply
    484.92x = 727.11 × 354.78
  4. Step 4: Simplify right side
    484.92x = 257,964.09
  5. Step 5: Solve for x
    x = 257,964.09/484.92
  6. Step 6: Final answer
    x = 531.97

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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.