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Finding the Third Proportional to 371.75 and 655.75

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Solution

The third proportional to 371.75 and 655.75 is: 1,156.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    371.75 : 655.75 = 655.75 : x
  2. Step 2: Convert to fraction form
    371.75/655.75 = 655.75/x
  3. Step 3: Cross multiply
    371.75x = 655.75 × 655.75
  4. Step 4: Simplify right side
    371.75x = 430,008.06
  5. Step 5: Solve for x
    x = 430,008.06/371.75
  6. Step 6: Final answer
    x = 1,156.71

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Why These Related Problems?

These problems maintain the same ratio (1.76) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.