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Finding the Fourth Proportional to 323.11, 483.89 and 205.57

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Solution

The fourth proportional to 323.11, 483.89 and 205.57 is: 307.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    323.11 : 483.89 = 205.57 : x
  2. Step 2: Convert to fraction form
    323.11/483.89 = 205.57/x
  3. Step 3: Cross multiply
    323.11x = 483.89 × 205.57
  4. Step 4: Simplify right side
    323.11x = 99,472.24
  5. Step 5: Solve for x
    x = 99,472.24/323.11
  6. Step 6: Final answer
    x = 307.86

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.