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Finding the Fourth Proportional to 249.42, 374.17 and 76.06

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Solution

The fourth proportional to 249.42, 374.17 and 76.06 is: 114.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    249.42 : 374.17 = 76.06 : x
  2. Step 2: Convert to fraction form
    249.42/374.17 = 76.06/x
  3. Step 3: Cross multiply
    249.42x = 374.17 × 76.06
  4. Step 4: Simplify right side
    249.42x = 28,460.21
  5. Step 5: Solve for x
    x = 28,460.21/249.42
  6. Step 6: Final answer
    x = 114.11

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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.