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Finding the Fourth Proportional to 249.01, 373.57 and 86.70

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Solution

The fourth proportional to 249.01, 373.57 and 86.70 is: 130.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    249.01 : 373.57 = 86.70 : x
  2. Step 2: Convert to fraction form
    249.01/373.57 = 86.70/x
  3. Step 3: Cross multiply
    249.01x = 373.57 × 86.70
  4. Step 4: Simplify right side
    249.01x = 32,387.16
  5. Step 5: Solve for x
    x = 32,387.16/249.01
  6. Step 6: Final answer
    x = 130.06

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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.