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Finding the Fourth Proportional to 247.80, 372.11 and 193.53

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Solution

The fourth proportional to 247.80, 372.11 and 193.53 is: 290.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    247.80 : 372.11 = 193.53 : x
  2. Step 2: Convert to fraction form
    247.80/372.11 = 193.53/x
  3. Step 3: Cross multiply
    247.80x = 372.11 × 193.53
  4. Step 4: Simplify right side
    247.80x = 72,013.48
  5. Step 5: Solve for x
    x = 72,013.48/247.80
  6. Step 6: Final answer
    x = 290.61

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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.