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Finding the Third Proportional to 709.50 and 1,509.56

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Solution

The third proportional to 709.50 and 1,509.56 is: 3,211.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    709.50 : 1,509.56 = 1,509.56 : x
  2. Step 2: Convert to fraction form
    709.50/1,509.56 = 1,509.56/x
  3. Step 3: Cross multiply
    709.50x = 1,509.56 × 1,509.56
  4. Step 4: Simplify right side
    709.50x = 2,278,778.94
  5. Step 5: Solve for x
    x = 2,278,778.94/709.50
  6. Step 6: Final answer
    x = 3,211.81

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Why These Related Problems?

These problems maintain the same ratio (2.13) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.