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Finding the Fourth Proportional to 637.38, 955.81 and 432.01

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Solution

The fourth proportional to 637.38, 955.81 and 432.01 is: 647.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    637.38 : 955.81 = 432.01 : x
  2. Step 2: Convert to fraction form
    637.38/955.81 = 432.01/x
  3. Step 3: Cross multiply
    637.38x = 955.81 × 432.01
  4. Step 4: Simplify right side
    637.38x = 412,919.48
  5. Step 5: Solve for x
    x = 412,919.48/637.38
  6. Step 6: Final answer
    x = 647.84

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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.