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Finding the Fourth Proportional to 641.53, 962.52 and 367.85

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Solution

The fourth proportional to 641.53, 962.52 and 367.85 is: 551.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    641.53 : 962.52 = 367.85 : x
  2. Step 2: Convert to fraction form
    641.53/962.52 = 367.85/x
  3. Step 3: Cross multiply
    641.53x = 962.52 × 367.85
  4. Step 4: Simplify right side
    641.53x = 354,062.98
  5. Step 5: Solve for x
    x = 354,062.98/641.53
  6. Step 6: Final answer
    x = 551.90

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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.