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Finding the Fourth Proportional to 177.28, 265.35 and 115.61

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Solution

The fourth proportional to 177.28, 265.35 and 115.61 is: 173.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    177.28 : 265.35 = 115.61 : x
  2. Step 2: Convert to fraction form
    177.28/265.35 = 115.61/x
  3. Step 3: Cross multiply
    177.28x = 265.35 × 115.61
  4. Step 4: Simplify right side
    177.28x = 30,677.11
  5. Step 5: Solve for x
    x = 30,677.11/177.28
  6. Step 6: Final answer
    x = 173.04

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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.