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Finding the Fourth Proportional to 249.07, 373.20 and 140.80

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Solution

The fourth proportional to 249.07, 373.20 and 140.80 is: 210.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    249.07 : 373.20 = 140.80 : x
  2. Step 2: Convert to fraction form
    249.07/373.20 = 140.80/x
  3. Step 3: Cross multiply
    249.07x = 373.20 × 140.80
  4. Step 4: Simplify right side
    249.07x = 52,546.56
  5. Step 5: Solve for x
    x = 52,546.56/249.07
  6. Step 6: Final answer
    x = 210.97

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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.