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Finding the Fourth Proportional to 325.44, 449.15 and 194.42

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Solution

The fourth proportional to 325.44, 449.15 and 194.42 is: 268.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    325.44 : 449.15 = 194.42 : x
  2. Step 2: Convert to fraction form
    325.44/449.15 = 194.42/x
  3. Step 3: Cross multiply
    325.44x = 449.15 × 194.42
  4. Step 4: Simplify right side
    325.44x = 87,323.89
  5. Step 5: Solve for x
    x = 87,323.89/325.44
  6. Step 6: Final answer
    x = 268.33

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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.