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Finding the Third Proportional to 548.75 and 868.69

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Solution

The third proportional to 548.75 and 868.69 is: 1,375.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    548.75 : 868.69 = 868.69 : x
  2. Step 2: Convert to fraction form
    548.75/868.69 = 868.69/x
  3. Step 3: Cross multiply
    548.75x = 868.69 × 868.69
  4. Step 4: Simplify right side
    548.75x = 754,617.97
  5. Step 5: Solve for x
    x = 754,617.97/548.75
  6. Step 6: Final answer
    x = 1,375.16

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Why These Related Problems?

These problems maintain the same ratio (1.58) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.