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Finding the Fourth Proportional to 323.82, 446.64 and 207.18

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Solution

The fourth proportional to 323.82, 446.64 and 207.18 is: 285.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    323.82 : 446.64 = 207.18 : x
  2. Step 2: Convert to fraction form
    323.82/446.64 = 207.18/x
  3. Step 3: Cross multiply
    323.82x = 446.64 × 207.18
  4. Step 4: Simplify right side
    323.82x = 92,534.88
  5. Step 5: Solve for x
    x = 92,534.88/323.82
  6. Step 6: Final answer
    x = 285.76

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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.