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Finding the Third Proportional to 274.50 and 410.25

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Solution

The third proportional to 274.50 and 410.25 is: 613.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    274.50 : 410.25 = 410.25 : x
  2. Step 2: Convert to fraction form
    274.50/410.25 = 410.25/x
  3. Step 3: Cross multiply
    274.50x = 410.25 × 410.25
  4. Step 4: Simplify right side
    274.50x = 168,305.06
  5. Step 5: Solve for x
    x = 168,305.06/274.50
  6. Step 6: Final answer
    x = 613.13

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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.