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Finding the Third Proportional to 828.13 and 1,120.69

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Solution

The third proportional to 828.13 and 1,120.69 is: 1,516.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    828.13 : 1,120.69 = 1,120.69 : x
  2. Step 2: Convert to fraction form
    828.13/1,120.69 = 1,120.69/x
  3. Step 3: Cross multiply
    828.13x = 1,120.69 × 1,120.69
  4. Step 4: Simplify right side
    828.13x = 1,255,940.47
  5. Step 5: Solve for x
    x = 1,255,940.47/828.13
  6. Step 6: Final answer
    x = 1,516.61

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Why These Related Problems?

These problems maintain the same ratio (1.35) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.