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Finding the Third Proportional to 681.38 and 1,054.88

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Solution

The third proportional to 681.38 and 1,054.88 is: 1,633.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    681.38 : 1,054.88 = 1,054.88 : x
  2. Step 2: Convert to fraction form
    681.38/1,054.88 = 1,054.88/x
  3. Step 3: Cross multiply
    681.38x = 1,054.88 × 1,054.88
  4. Step 4: Simplify right side
    681.38x = 1,112,761.27
  5. Step 5: Solve for x
    x = 1,112,761.27/681.38
  6. Step 6: Final answer
    x = 1,633.11

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.