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Finding the Fourth Proportional to 361.38, 542.12 and 166.27

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Solution

The fourth proportional to 361.38, 542.12 and 166.27 is: 249.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    361.38 : 542.12 = 166.27 : x
  2. Step 2: Convert to fraction form
    361.38/542.12 = 166.27/x
  3. Step 3: Cross multiply
    361.38x = 542.12 × 166.27
  4. Step 4: Simplify right side
    361.38x = 90,138.29
  5. Step 5: Solve for x
    x = 90,138.29/361.38
  6. Step 6: Final answer
    x = 249.43

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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.