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Finding the Fourth Proportional to 467.52, 645.11 and 280.97

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Solution

The fourth proportional to 467.52, 645.11 and 280.97 is: 387.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    467.52 : 645.11 = 280.97 : x
  2. Step 2: Convert to fraction form
    467.52/645.11 = 280.97/x
  3. Step 3: Cross multiply
    467.52x = 645.11 × 280.97
  4. Step 4: Simplify right side
    467.52x = 181,256.56
  5. Step 5: Solve for x
    x = 181,256.56/467.52
  6. Step 6: Final answer
    x = 387.70

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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.