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Finding the Third Proportional to 225.91 and 490.27

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Solution

The third proportional to 225.91 and 490.27 is: 1,063.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    225.91 : 490.27 = 490.27 : x
  2. Step 2: Convert to fraction form
    225.91/490.27 = 490.27/x
  3. Step 3: Cross multiply
    225.91x = 490.27 × 490.27
  4. Step 4: Simplify right side
    225.91x = 240,366.13
  5. Step 5: Solve for x
    x = 240,366.13/225.91
  6. Step 6: Final answer
    x = 1,063.97

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.