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Finding the Fourth Proportional to 338.28, 467.79 and 323.79

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Solution

The fourth proportional to 338.28, 467.79 and 323.79 is: 447.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    338.28 : 467.79 = 323.79 : x
  2. Step 2: Convert to fraction form
    338.28/467.79 = 323.79/x
  3. Step 3: Cross multiply
    338.28x = 467.79 × 323.79
  4. Step 4: Simplify right side
    338.28x = 151,465.72
  5. Step 5: Solve for x
    x = 151,465.72/338.28
  6. Step 6: Final answer
    x = 447.75

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.