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Finding the Third Proportional to 704.50 and 1,639.25

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Solution

The third proportional to 704.50 and 1,639.25 is: 3,814.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    704.50 : 1,639.25 = 1,639.25 : x
  2. Step 2: Convert to fraction form
    704.50/1,639.25 = 1,639.25/x
  3. Step 3: Cross multiply
    704.50x = 1,639.25 × 1,639.25
  4. Step 4: Simplify right side
    704.50x = 2,687,140.56
  5. Step 5: Solve for x
    x = 2,687,140.56/704.50
  6. Step 6: Final answer
    x = 3,814.25

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Why These Related Problems?

These problems maintain the same ratio (2.33) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.