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Finding the Fourth Proportional to 247.14, 372.60 and 243.90

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Solution

The fourth proportional to 247.14, 372.60 and 243.90 is: 367.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    247.14 : 372.60 = 243.90 : x
  2. Step 2: Convert to fraction form
    247.14/372.60 = 243.90/x
  3. Step 3: Cross multiply
    247.14x = 372.60 × 243.90
  4. Step 4: Simplify right side
    247.14x = 90,877.14
  5. Step 5: Solve for x
    x = 90,877.14/247.14
  6. Step 6: Final answer
    x = 367.72

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.