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Finding the Third Proportional to 371 and 495.50

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Solution

The third proportional to 371 and 495.50 is: 661.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    371 : 495.50 = 495.50 : x
  2. Step 2: Convert to fraction form
    371/495.50 = 495.50/x
  3. Step 3: Cross multiply
    371x = 495.50 × 495.50
  4. Step 4: Simplify right side
    371x = 245,520.25
  5. Step 5: Solve for x
    x = 245,520.25/371
  6. Step 6: Final answer
    x = 661.78

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Why These Related Problems?

These problems maintain the same ratio (1.34) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.