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Finding the Third Proportional to 1,005.38 and 1,480.69

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Solution

The third proportional to 1,005.38 and 1,480.69 is: 2,180.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,005.38 : 1,480.69 = 1,480.69 : x
  2. Step 2: Convert to fraction form
    1,005.38/1,480.69 = 1,480.69/x
  3. Step 3: Cross multiply
    1,005.38x = 1,480.69 × 1,480.69
  4. Step 4: Simplify right side
    1,005.38x = 2,192,435.47
  5. Step 5: Solve for x
    x = 2,192,435.47/1,005.38
  6. Step 6: Final answer
    x = 2,180.71

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Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.