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Finding the Third Proportional to 343.50 and 749.25

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Solution

The third proportional to 343.50 and 749.25 is: 1,634.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    343.50 : 749.25 = 749.25 : x
  2. Step 2: Convert to fraction form
    343.50/749.25 = 749.25/x
  3. Step 3: Cross multiply
    343.50x = 749.25 × 749.25
  4. Step 4: Simplify right side
    343.50x = 561,375.56
  5. Step 5: Solve for x
    x = 561,375.56/343.50
  6. Step 6: Final answer
    x = 1,634.28

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.