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Finding the Fourth Proportional to 328.73, 453.09 and 249.95

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Solution

The fourth proportional to 328.73, 453.09 and 249.95 is: 344.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    328.73 : 453.09 = 249.95 : x
  2. Step 2: Convert to fraction form
    328.73/453.09 = 249.95/x
  3. Step 3: Cross multiply
    328.73x = 453.09 × 249.95
  4. Step 4: Simplify right side
    328.73x = 113,251.92
  5. Step 5: Solve for x
    x = 113,251.92/328.73
  6. Step 6: Final answer
    x = 344.52

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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.