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Finding the Fourth Proportional to 249.53, 374.97 and 127.88

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Solution

The fourth proportional to 249.53, 374.97 and 127.88 is: 192.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    249.53 : 374.97 = 127.88 : x
  2. Step 2: Convert to fraction form
    249.53/374.97 = 127.88/x
  3. Step 3: Cross multiply
    249.53x = 374.97 × 127.88
  4. Step 4: Simplify right side
    249.53x = 47,949.77
  5. Step 5: Solve for x
    x = 47,949.77/249.53
  6. Step 6: Final answer
    x = 192.16

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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.