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Finding the Third Proportional to 43.19 and 61.22

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Solution

The third proportional to 43.19 and 61.22 is: 86.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    43.19 : 61.22 = 61.22 : x
  2. Step 2: Convert to fraction form
    43.19/61.22 = 61.22/x
  3. Step 3: Cross multiply
    43.19x = 61.22 × 61.22
  4. Step 4: Simplify right side
    43.19x = 3,748.45
  5. Step 5: Solve for x
    x = 3,748.45/43.19
  6. Step 6: Final answer
    x = 86.79

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Why These Related Problems?

These problems maintain the same ratio (1.42) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.