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Finding the Third Proportional to 1,105 and 2,285

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Solution

The third proportional to 1,105 and 2,285 is: 4,725.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,105 : 2,285 = 2,285 : x
  2. Step 2: Convert to fraction form
    1,105/2,285 = 2,285/x
  3. Step 3: Cross multiply
    1,105x = 2,285 × 2,285
  4. Step 4: Simplify right side
    1,105x = 5,221,225
  5. Step 5: Solve for x
    x = 5,221,225/1,105
  6. Step 6: Final answer
    x = 4,725.09

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Why These Related Problems?

These problems maintain the same ratio (2.07) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.