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Finding the Fourth Proportional to 410.62, 615.97 and 118.12

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Solution

The fourth proportional to 410.62, 615.97 and 118.12 is: 177.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    410.62 : 615.97 = 118.12 : x
  2. Step 2: Convert to fraction form
    410.62/615.97 = 118.12/x
  3. Step 3: Cross multiply
    410.62x = 615.97 × 118.12
  4. Step 4: Simplify right side
    410.62x = 72,757.79
  5. Step 5: Solve for x
    x = 72,757.79/410.62
  6. Step 6: Final answer
    x = 177.19

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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.