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Finding the Third Proportional to 723.94 and 920.53

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Solution

The third proportional to 723.94 and 920.53 is: 1,170.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    723.94 : 920.53 = 920.53 : x
  2. Step 2: Convert to fraction form
    723.94/920.53 = 920.53/x
  3. Step 3: Cross multiply
    723.94x = 920.53 × 920.53
  4. Step 4: Simplify right side
    723.94x = 847,377.78
  5. Step 5: Solve for x
    x = 847,377.78/723.94
  6. Step 6: Final answer
    x = 1,170.51

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Why These Related Problems?

These problems maintain the same ratio (1.27) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.