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Finding the Fourth Proportional to 323.27, 445.78 and 211.26

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Solution

The fourth proportional to 323.27, 445.78 and 211.26 is: 291.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    323.27 : 445.78 = 211.26 : x
  2. Step 2: Convert to fraction form
    323.27/445.78 = 211.26/x
  3. Step 3: Cross multiply
    323.27x = 445.78 × 211.26
  4. Step 4: Simplify right side
    323.27x = 94,174.95
  5. Step 5: Solve for x
    x = 94,174.95/323.27
  6. Step 6: Final answer
    x = 291.32

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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.