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Finding the Third Proportional to 28.75 and 32.13

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Solution

The third proportional to 28.75 and 32.13 is: 35.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    28.75 : 32.13 = 32.13 : x
  2. Step 2: Convert to fraction form
    28.75/32.13 = 32.13/x
  3. Step 3: Cross multiply
    28.75x = 32.13 × 32.13
  4. Step 4: Simplify right side
    28.75x = 1,032.02
  5. Step 5: Solve for x
    x = 1,032.02/28.75
  6. Step 6: Final answer
    x = 35.90

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Why These Related Problems?

These problems maintain the same ratio (1.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.