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Finding the Third Proportional to 696.50 and 809

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Solution

The third proportional to 696.50 and 809 is: 939.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    696.50 : 809 = 809 : x
  2. Step 2: Convert to fraction form
    696.50/809 = 809/x
  3. Step 3: Cross multiply
    696.50x = 809 × 809
  4. Step 4: Simplify right side
    696.50x = 654,481
  5. Step 5: Solve for x
    x = 654,481/696.50
  6. Step 6: Final answer
    x = 939.67

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Why These Related Problems?

These problems maintain the same ratio (1.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.