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Finding the Fourth Proportional to 323.82, 486.18 and 201.72

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Solution

The fourth proportional to 323.82, 486.18 and 201.72 is: 302.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    323.82 : 486.18 = 201.72 : x
  2. Step 2: Convert to fraction form
    323.82/486.18 = 201.72/x
  3. Step 3: Cross multiply
    323.82x = 486.18 × 201.72
  4. Step 4: Simplify right side
    323.82x = 98,072.23
  5. Step 5: Solve for x
    x = 98,072.23/323.82
  6. Step 6: Final answer
    x = 302.86

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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.