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Finding the Third Proportional to 874 and 1,306.25

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Solution

The third proportional to 874 and 1,306.25 is: 1,952.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    874 : 1,306.25 = 1,306.25 : x
  2. Step 2: Convert to fraction form
    874/1,306.25 = 1,306.25/x
  3. Step 3: Cross multiply
    874x = 1,306.25 × 1,306.25
  4. Step 4: Simplify right side
    874x = 1,706,289.06
  5. Step 5: Solve for x
    x = 1,706,289.06/874
  6. Step 6: Final answer
    x = 1,952.28

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.