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Finding the Third Proportional to 353.11 and 495.49

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Solution

The third proportional to 353.11 and 495.49 is: 695.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    353.11 : 495.49 = 495.49 : x
  2. Step 2: Convert to fraction form
    353.11/495.49 = 495.49/x
  3. Step 3: Cross multiply
    353.11x = 495.49 × 495.49
  4. Step 4: Simplify right side
    353.11x = 245,512.51
  5. Step 5: Solve for x
    x = 245,512.51/353.11
  6. Step 6: Final answer
    x = 695.29

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.