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Finding the Third Proportional to 327.94 and 505.69

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Solution

The third proportional to 327.94 and 505.69 is: 779.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    327.94 : 505.69 = 505.69 : x
  2. Step 2: Convert to fraction form
    327.94/505.69 = 505.69/x
  3. Step 3: Cross multiply
    327.94x = 505.69 × 505.69
  4. Step 4: Simplify right side
    327.94x = 255,719.85
  5. Step 5: Solve for x
    x = 255,719.85/327.94
  6. Step 6: Final answer
    x = 779.78

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.