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Finding the Third Proportional to 379.69 and 834.19

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Solution

The third proportional to 379.69 and 834.19 is: 1,832.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    379.69 : 834.19 = 834.19 : x
  2. Step 2: Convert to fraction form
    379.69/834.19 = 834.19/x
  3. Step 3: Cross multiply
    379.69x = 834.19 × 834.19
  4. Step 4: Simplify right side
    379.69x = 695,868.79
  5. Step 5: Solve for x
    x = 695,868.79/379.69
  6. Step 6: Final answer
    x = 1,832.74

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.