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Finding the Third Proportional to 79.17 and 101.67

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Solution

The third proportional to 79.17 and 101.67 is: 130.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    79.17 : 101.67 = 101.67 : x
  2. Step 2: Convert to fraction form
    79.17/101.67 = 101.67/x
  3. Step 3: Cross multiply
    79.17x = 101.67 × 101.67
  4. Step 4: Simplify right side
    79.17x = 10,337.17
  5. Step 5: Solve for x
    x = 10,337.17/79.17
  6. Step 6: Final answer
    x = 130.57

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Why These Related Problems?

These problems maintain the same ratio (1.28) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.