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Finding the Fourth Proportional to 249.27, 375.41 and 220.74

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Solution

The fourth proportional to 249.27, 375.41 and 220.74 is: 332.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    249.27 : 375.41 = 220.74 : x
  2. Step 2: Convert to fraction form
    249.27/375.41 = 220.74/x
  3. Step 3: Cross multiply
    249.27x = 375.41 × 220.74
  4. Step 4: Simplify right side
    249.27x = 82,866.90
  5. Step 5: Solve for x
    x = 82,866.90/249.27
  6. Step 6: Final answer
    x = 332.44

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.