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Finding the Third Proportional to 64.23 and 135.11

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Solution

The third proportional to 64.23 and 135.11 is: 284.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    64.23 : 135.11 = 135.11 : x
  2. Step 2: Convert to fraction form
    64.23/135.11 = 135.11/x
  3. Step 3: Cross multiply
    64.23x = 135.11 × 135.11
  4. Step 4: Simplify right side
    64.23x = 18,253.49
  5. Step 5: Solve for x
    x = 18,253.49/64.23
  6. Step 6: Final answer
    x = 284.19

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Why These Related Problems?

These problems maintain the same ratio (2.10) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.