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Finding the Fourth Proportional to 249.14, 373.75 and 84.58

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Solution

The fourth proportional to 249.14, 373.75 and 84.58 is: 126.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    249.14 : 373.75 = 84.58 : x
  2. Step 2: Convert to fraction form
    249.14/373.75 = 84.58/x
  3. Step 3: Cross multiply
    249.14x = 373.75 × 84.58
  4. Step 4: Simplify right side
    249.14x = 31,610.63
  5. Step 5: Solve for x
    x = 31,610.63/249.14
  6. Step 6: Final answer
    x = 126.88

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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.