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Finding the Fourth Proportional to 372.76, 559.18 and 141.73

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Solution

The fourth proportional to 372.76, 559.18 and 141.73 is: 212.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    372.76 : 559.18 = 141.73 : x
  2. Step 2: Convert to fraction form
    372.76/559.18 = 141.73/x
  3. Step 3: Cross multiply
    372.76x = 559.18 × 141.73
  4. Step 4: Simplify right side
    372.76x = 79,249.79
  5. Step 5: Solve for x
    x = 79,249.79/372.76
  6. Step 6: Final answer
    x = 212.61

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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.