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Finding the Fourth Proportional to 410.52, 615.60 and 132.79

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Solution

The fourth proportional to 410.52, 615.60 and 132.79 is: 199.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    410.52 : 615.60 = 132.79 : x
  2. Step 2: Convert to fraction form
    410.52/615.60 = 132.79/x
  3. Step 3: Cross multiply
    410.52x = 615.60 × 132.79
  4. Step 4: Simplify right side
    410.52x = 81,745.14
  5. Step 5: Solve for x
    x = 81,745.14/410.52
  6. Step 6: Final answer
    x = 199.13

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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.