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Finding the Third Proportional to 449.25 and 694.03

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Solution

The third proportional to 449.25 and 694.03 is: 1,072.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    449.25 : 694.03 = 694.03 : x
  2. Step 2: Convert to fraction form
    449.25/694.03 = 694.03/x
  3. Step 3: Cross multiply
    449.25x = 694.03 × 694.03
  4. Step 4: Simplify right side
    449.25x = 481,679.38
  5. Step 5: Solve for x
    x = 481,679.38/449.25
  6. Step 6: Final answer
    x = 1,072.19

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.