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Finding the Third Proportional to 159.05 and 339.61

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Solution

The third proportional to 159.05 and 339.61 is: 725.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    159.05 : 339.61 = 339.61 : x
  2. Step 2: Convert to fraction form
    159.05/339.61 = 339.61/x
  3. Step 3: Cross multiply
    159.05x = 339.61 × 339.61
  4. Step 4: Simplify right side
    159.05x = 115,334.53
  5. Step 5: Solve for x
    x = 115,334.53/159.05
  6. Step 6: Final answer
    x = 725.16

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Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.