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Finding the Fourth Proportional to 672.43, 927.25 and 475.87

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Solution

The fourth proportional to 672.43, 927.25 and 475.87 is: 656.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    672.43 : 927.25 = 475.87 : x
  2. Step 2: Convert to fraction form
    672.43/927.25 = 475.87/x
  3. Step 3: Cross multiply
    672.43x = 927.25 × 475.87
  4. Step 4: Simplify right side
    672.43x = 441,250.46
  5. Step 5: Solve for x
    x = 441,250.46/672.43
  6. Step 6: Final answer
    x = 656.20

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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.