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Finding the Fourth Proportional to 322.68, 444.88 and 239.88

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Solution

The fourth proportional to 322.68, 444.88 and 239.88 is: 330.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    322.68 : 444.88 = 239.88 : x
  2. Step 2: Convert to fraction form
    322.68/444.88 = 239.88/x
  3. Step 3: Cross multiply
    322.68x = 444.88 × 239.88
  4. Step 4: Simplify right side
    322.68x = 106,717.81
  5. Step 5: Solve for x
    x = 106,717.81/322.68
  6. Step 6: Final answer
    x = 330.72

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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.