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Finding the Third Proportional to 38.60 and 61.54

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Solution

The third proportional to 38.60 and 61.54 is: 98.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    38.60 : 61.54 = 61.54 : x
  2. Step 2: Convert to fraction form
    38.60/61.54 = 61.54/x
  3. Step 3: Cross multiply
    38.60x = 61.54 × 61.54
  4. Step 4: Simplify right side
    38.60x = 3,787.30
  5. Step 5: Solve for x
    x = 3,787.30/38.60
  6. Step 6: Final answer
    x = 98.11

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Why These Related Problems?

These problems maintain the same ratio (1.59) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.