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Finding the Third Proportional to 681.94 and 1,020.09

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Solution

The third proportional to 681.94 and 1,020.09 is: 1,525.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    681.94 : 1,020.09 = 1,020.09 : x
  2. Step 2: Convert to fraction form
    681.94/1,020.09 = 1,020.09/x
  3. Step 3: Cross multiply
    681.94x = 1,020.09 × 1,020.09
  4. Step 4: Simplify right side
    681.94x = 1,040,591.26
  5. Step 5: Solve for x
    x = 1,040,591.26/681.94
  6. Step 6: Final answer
    x = 1,525.93

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.