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Finding the Fourth Proportional to 249.66, 372.11 and 238.86

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Solution

The fourth proportional to 249.66, 372.11 and 238.86 is: 356.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    249.66 : 372.11 = 238.86 : x
  2. Step 2: Convert to fraction form
    249.66/372.11 = 238.86/x
  3. Step 3: Cross multiply
    249.66x = 372.11 × 238.86
  4. Step 4: Simplify right side
    249.66x = 88,881.00
  5. Step 5: Solve for x
    x = 88,881.00/249.66
  6. Step 6: Final answer
    x = 356.01

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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.