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Finding the Fourth Proportional to 641.57, 962.82 and 495.68

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Solution

The fourth proportional to 641.57, 962.82 and 495.68 is: 743.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    641.57 : 962.82 = 495.68 : x
  2. Step 2: Convert to fraction form
    641.57/962.82 = 495.68/x
  3. Step 3: Cross multiply
    641.57x = 962.82 × 495.68
  4. Step 4: Simplify right side
    641.57x = 477,253.10
  5. Step 5: Solve for x
    x = 477,253.10/641.57
  6. Step 6: Final answer
    x = 743.89

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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.