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Finding the Fourth Proportional to 322.80, 445.42 and 182.91

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Solution

The fourth proportional to 322.80, 445.42 and 182.91 is: 252.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    322.80 : 445.42 = 182.91 : x
  2. Step 2: Convert to fraction form
    322.80/445.42 = 182.91/x
  3. Step 3: Cross multiply
    322.80x = 445.42 × 182.91
  4. Step 4: Simplify right side
    322.80x = 81,471.77
  5. Step 5: Solve for x
    x = 81,471.77/322.80
  6. Step 6: Final answer
    x = 252.39

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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.