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Finding the Fourth Proportional to 247.11, 370.85 and 238.47

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Solution

The fourth proportional to 247.11, 370.85 and 238.47 is: 357.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    247.11 : 370.85 = 238.47 : x
  2. Step 2: Convert to fraction form
    247.11/370.85 = 238.47/x
  3. Step 3: Cross multiply
    247.11x = 370.85 × 238.47
  4. Step 4: Simplify right side
    247.11x = 88,435.41
  5. Step 5: Solve for x
    x = 88,435.41/247.11
  6. Step 6: Final answer
    x = 357.88

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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.