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Finding the Third Proportional to 7.97 and 15.66

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Solution

The third proportional to 7.97 and 15.66 is: 30.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    7.97 : 15.66 = 15.66 : x
  2. Step 2: Convert to fraction form
    7.97/15.66 = 15.66/x
  3. Step 3: Cross multiply
    7.97x = 15.66 × 15.66
  4. Step 4: Simplify right side
    7.97x = 245.12
  5. Step 5: Solve for x
    x = 245.12/7.97
  6. Step 6: Final answer
    x = 30.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.96) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.