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Finding the Third Proportional to 492 and 626.25

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Solution

The third proportional to 492 and 626.25 is: 797.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    492 : 626.25 = 626.25 : x
  2. Step 2: Convert to fraction form
    492/626.25 = 626.25/x
  3. Step 3: Cross multiply
    492x = 626.25 × 626.25
  4. Step 4: Simplify right side
    492x = 392,189.06
  5. Step 5: Solve for x
    x = 392,189.06/492
  6. Step 6: Final answer
    x = 797.13

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Why These Related Problems?

These problems maintain the same ratio (1.27) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.