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Finding the Fourth Proportional to 330.73, 453.45 and 324.88

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Solution

The fourth proportional to 330.73, 453.45 and 324.88 is: 445.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    330.73 : 453.45 = 324.88 : x
  2. Step 2: Convert to fraction form
    330.73/453.45 = 324.88/x
  3. Step 3: Cross multiply
    330.73x = 453.45 × 324.88
  4. Step 4: Simplify right side
    330.73x = 147,316.84
  5. Step 5: Solve for x
    x = 147,316.84/330.73
  6. Step 6: Final answer
    x = 445.43

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.