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Finding the Fourth Proportional to 637.68, 955.87 and 432.27

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Solution

The fourth proportional to 637.68, 955.87 and 432.27 is: 647.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    637.68 : 955.87 = 432.27 : x
  2. Step 2: Convert to fraction form
    637.68/955.87 = 432.27/x
  3. Step 3: Cross multiply
    637.68x = 955.87 × 432.27
  4. Step 4: Simplify right side
    637.68x = 413,195.28
  5. Step 5: Solve for x
    x = 413,195.28/637.68
  6. Step 6: Final answer
    x = 647.97

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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.