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Finding the Third Proportional to 82.63 and 108.63

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Solution

The third proportional to 82.63 and 108.63 is: 142.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    82.63 : 108.63 = 108.63 : x
  2. Step 2: Convert to fraction form
    82.63/108.63 = 108.63/x
  3. Step 3: Cross multiply
    82.63x = 108.63 × 108.63
  4. Step 4: Simplify right side
    82.63x = 11,799.39
  5. Step 5: Solve for x
    x = 11,799.39/82.63
  6. Step 6: Final answer
    x = 142.81

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Why These Related Problems?

These problems maintain the same ratio (1.31) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.