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Finding the Third Proportional to 480.94 and 625.22

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Solution

The third proportional to 480.94 and 625.22 is: 812.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    480.94 : 625.22 = 625.22 : x
  2. Step 2: Convert to fraction form
    480.94/625.22 = 625.22/x
  3. Step 3: Cross multiply
    480.94x = 625.22 × 625.22
  4. Step 4: Simplify right side
    480.94x = 390,898.49
  5. Step 5: Solve for x
    x = 390,898.49/480.94
  6. Step 6: Final answer
    x = 812.78

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Why These Related Problems?

These problems maintain the same ratio (1.30) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.