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Finding the Fourth Proportional to 249.35, 374.17 and 141.21

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Solution

The fourth proportional to 249.35, 374.17 and 141.21 is: 211.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    249.35 : 374.17 = 141.21 : x
  2. Step 2: Convert to fraction form
    249.35/374.17 = 141.21/x
  3. Step 3: Cross multiply
    249.35x = 374.17 × 141.21
  4. Step 4: Simplify right side
    249.35x = 52,836.55
  5. Step 5: Solve for x
    x = 52,836.55/249.35
  6. Step 6: Final answer
    x = 211.90

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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.