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Finding the Fourth Proportional to 322.49, 444.82 and 211.85

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Solution

The fourth proportional to 322.49, 444.82 and 211.85 is: 292.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    322.49 : 444.82 = 211.85 : x
  2. Step 2: Convert to fraction form
    322.49/444.82 = 211.85/x
  3. Step 3: Cross multiply
    322.49x = 444.82 × 211.85
  4. Step 4: Simplify right side
    322.49x = 94,235.12
  5. Step 5: Solve for x
    x = 94,235.12/322.49
  6. Step 6: Final answer
    x = 292.21

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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.