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Finding the Third Proportional to 116.19 and 170.81

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Solution

The third proportional to 116.19 and 170.81 is: 251.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    116.19 : 170.81 = 170.81 : x
  2. Step 2: Convert to fraction form
    116.19/170.81 = 170.81/x
  3. Step 3: Cross multiply
    116.19x = 170.81 × 170.81
  4. Step 4: Simplify right side
    116.19x = 29,176.91
  5. Step 5: Solve for x
    x = 29,176.91/116.19
  6. Step 6: Final answer
    x = 251.12

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Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.