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Finding the Fourth Proportional to 249.85, 372.62 and 213.52

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Solution

The fourth proportional to 249.85, 372.62 and 213.52 is: 318.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    249.85 : 372.62 = 213.52 : x
  2. Step 2: Convert to fraction form
    249.85/372.62 = 213.52/x
  3. Step 3: Cross multiply
    249.85x = 372.62 × 213.52
  4. Step 4: Simplify right side
    249.85x = 79,560.92
  5. Step 5: Solve for x
    x = 79,560.92/249.85
  6. Step 6: Final answer
    x = 318.43

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.