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Finding the Third Proportional to 28.13 and 64.13

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Solution

The third proportional to 28.13 and 64.13 is: 146.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    28.13 : 64.13 = 64.13 : x
  2. Step 2: Convert to fraction form
    28.13/64.13 = 64.13/x
  3. Step 3: Cross multiply
    28.13x = 64.13 × 64.13
  4. Step 4: Simplify right side
    28.13x = 4,112.02
  5. Step 5: Solve for x
    x = 4,112.02/28.13
  6. Step 6: Final answer
    x = 146.21

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Why These Related Problems?

These problems maintain the same ratio (2.28) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.