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Finding the Fourth Proportional to 247.89, 371.80 and 93.76

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Solution

The fourth proportional to 247.89, 371.80 and 93.76 is: 140.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    247.89 : 371.80 = 93.76 : x
  2. Step 2: Convert to fraction form
    247.89/371.80 = 93.76/x
  3. Step 3: Cross multiply
    247.89x = 371.80 × 93.76
  4. Step 4: Simplify right side
    247.89x = 34,859.97
  5. Step 5: Solve for x
    x = 34,859.97/247.89
  6. Step 6: Final answer
    x = 140.63

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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.