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Finding the Third Proportional to 10.76 and 12.67

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Solution

The third proportional to 10.76 and 12.67 is: 14.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    10.76 : 12.67 = 12.67 : x
  2. Step 2: Convert to fraction form
    10.76/12.67 = 12.67/x
  3. Step 3: Cross multiply
    10.76x = 12.67 × 12.67
  4. Step 4: Simplify right side
    10.76x = 160.57
  5. Step 5: Solve for x
    x = 160.57/10.76
  6. Step 6: Final answer
    x = 14.92

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Why These Related Problems?

These problems maintain the same ratio (1.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.