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Finding the Third Proportional to 69.66 and 152.81

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Solution

The third proportional to 69.66 and 152.81 is: 335.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    69.66 : 152.81 = 152.81 : x
  2. Step 2: Convert to fraction form
    69.66/152.81 = 152.81/x
  3. Step 3: Cross multiply
    69.66x = 152.81 × 152.81
  4. Step 4: Simplify right side
    69.66x = 23,351.66
  5. Step 5: Solve for x
    x = 23,351.66/69.66
  6. Step 6: Final answer
    x = 335.24

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.