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Finding the Third Proportional to 766.13 and 1,089.56

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Solution

The third proportional to 766.13 and 1,089.56 is: 1,549.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    766.13 : 1,089.56 = 1,089.56 : x
  2. Step 2: Convert to fraction form
    766.13/1,089.56 = 1,089.56/x
  3. Step 3: Cross multiply
    766.13x = 1,089.56 × 1,089.56
  4. Step 4: Simplify right side
    766.13x = 1,187,146.44
  5. Step 5: Solve for x
    x = 1,187,146.44/766.13
  6. Step 6: Final answer
    x = 1,549.55

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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.