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Finding the Fourth Proportional to 249.48, 345.87 and 240.57

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Solution

The fourth proportional to 249.48, 345.87 and 240.57 is: 333.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    249.48 : 345.87 = 240.57 : x
  2. Step 2: Convert to fraction form
    249.48/345.87 = 240.57/x
  3. Step 3: Cross multiply
    249.48x = 345.87 × 240.57
  4. Step 4: Simplify right side
    249.48x = 83,205.95
  5. Step 5: Solve for x
    x = 83,205.95/249.48
  6. Step 6: Final answer
    x = 333.52

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.