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Finding the Fourth Proportional to 321.30, 444.42 and 296.82

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Solution

The fourth proportional to 321.30, 444.42 and 296.82 is: 410.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    321.30 : 444.42 = 296.82 : x
  2. Step 2: Convert to fraction form
    321.30/444.42 = 296.82/x
  3. Step 3: Cross multiply
    321.30x = 444.42 × 296.82
  4. Step 4: Simplify right side
    321.30x = 131,912.74
  5. Step 5: Solve for x
    x = 131,912.74/321.30
  6. Step 6: Final answer
    x = 410.56

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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.