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Finding the Third Proportional to 6.68 and 15.85

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Solution

The third proportional to 6.68 and 15.85 is: 37.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    6.68 : 15.85 = 15.85 : x
  2. Step 2: Convert to fraction form
    6.68/15.85 = 15.85/x
  3. Step 3: Cross multiply
    6.68x = 15.85 × 15.85
  4. Step 4: Simplify right side
    6.68x = 251.34
  5. Step 5: Solve for x
    x = 251.34/6.68
  6. Step 6: Final answer
    x = 37.61

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Why These Related Problems?

These problems maintain the same ratio (2.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.