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Finding the Third Proportional to 663.44 and 1,424.75

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Solution

The third proportional to 663.44 and 1,424.75 is: 3,059.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    663.44 : 1,424.75 = 1,424.75 : x
  2. Step 2: Convert to fraction form
    663.44/1,424.75 = 1,424.75/x
  3. Step 3: Cross multiply
    663.44x = 1,424.75 × 1,424.75
  4. Step 4: Simplify right side
    663.44x = 2,029,912.56
  5. Step 5: Solve for x
    x = 2,029,912.56/663.44
  6. Step 6: Final answer
    x = 3,059.69

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.