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Finding the Fourth Proportional to 323.18, 446.20 and 245.42

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Solution

The fourth proportional to 323.18, 446.20 and 245.42 is: 338.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    323.18 : 446.20 = 245.42 : x
  2. Step 2: Convert to fraction form
    323.18/446.20 = 245.42/x
  3. Step 3: Cross multiply
    323.18x = 446.20 × 245.42
  4. Step 4: Simplify right side
    323.18x = 109,506.40
  5. Step 5: Solve for x
    x = 109,506.40/323.18
  6. Step 6: Final answer
    x = 338.84

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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.