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Finding the Fourth Proportional to 237.15, 327.19 and 138.88

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Solution

The fourth proportional to 237.15, 327.19 and 138.88 is: 191.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    237.15 : 327.19 = 138.88 : x
  2. Step 2: Convert to fraction form
    237.15/327.19 = 138.88/x
  3. Step 3: Cross multiply
    237.15x = 327.19 × 138.88
  4. Step 4: Simplify right side
    237.15x = 45,439.45
  5. Step 5: Solve for x
    x = 45,439.45/237.15
  6. Step 6: Final answer
    x = 191.61

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.