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Finding the Third Proportional to 201.50 and 371.50

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Solution

The third proportional to 201.50 and 371.50 is: 684.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    201.50 : 371.50 = 371.50 : x
  2. Step 2: Convert to fraction form
    201.50/371.50 = 371.50/x
  3. Step 3: Cross multiply
    201.50x = 371.50 × 371.50
  4. Step 4: Simplify right side
    201.50x = 138,012.25
  5. Step 5: Solve for x
    x = 138,012.25/201.50
  6. Step 6: Final answer
    x = 684.92

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Why These Related Problems?

These problems maintain the same ratio (1.84) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.