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Finding the Third Proportional to 417.25 and 622.25

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Solution

The third proportional to 417.25 and 622.25 is: 927.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    417.25 : 622.25 = 622.25 : x
  2. Step 2: Convert to fraction form
    417.25/622.25 = 622.25/x
  3. Step 3: Cross multiply
    417.25x = 622.25 × 622.25
  4. Step 4: Simplify right side
    417.25x = 387,195.06
  5. Step 5: Solve for x
    x = 387,195.06/417.25
  6. Step 6: Final answer
    x = 927.97

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.