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Finding the Third Proportional to 49.31 and 108.38

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Solution

The third proportional to 49.31 and 108.38 is: 238.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    49.31 : 108.38 = 108.38 : x
  2. Step 2: Convert to fraction form
    49.31/108.38 = 108.38/x
  3. Step 3: Cross multiply
    49.31x = 108.38 × 108.38
  4. Step 4: Simplify right side
    49.31x = 11,745.14
  5. Step 5: Solve for x
    x = 11,745.14/49.31
  6. Step 6: Final answer
    x = 238.18

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.