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Finding the Third Proportional to 868.88 and 1,223.63

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Solution

The third proportional to 868.88 and 1,223.63 is: 1,723.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    868.88 : 1,223.63 = 1,223.63 : x
  2. Step 2: Convert to fraction form
    868.88/1,223.63 = 1,223.63/x
  3. Step 3: Cross multiply
    868.88x = 1,223.63 × 1,223.63
  4. Step 4: Simplify right side
    868.88x = 1,497,258.14
  5. Step 5: Solve for x
    x = 1,497,258.14/868.88
  6. Step 6: Final answer
    x = 1,723.21

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Why These Related Problems?

These problems maintain the same ratio (1.41) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.