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Finding the Fourth Proportional to 249.81, 372.36 and 234.15

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Solution

The fourth proportional to 249.81, 372.36 and 234.15 is: 349.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    249.81 : 372.36 = 234.15 : x
  2. Step 2: Convert to fraction form
    249.81/372.36 = 234.15/x
  3. Step 3: Cross multiply
    249.81x = 372.36 × 234.15
  4. Step 4: Simplify right side
    249.81x = 87,188.09
  5. Step 5: Solve for x
    x = 87,188.09/249.81
  6. Step 6: Final answer
    x = 349.02

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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.