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Finding the Fourth Proportional to 325.55, 449.15 and 194.54

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Solution

The fourth proportional to 325.55, 449.15 and 194.54 is: 268.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    325.55 : 449.15 = 194.54 : x
  2. Step 2: Convert to fraction form
    325.55/449.15 = 194.54/x
  3. Step 3: Cross multiply
    325.55x = 449.15 × 194.54
  4. Step 4: Simplify right side
    325.55x = 87,374.42
  5. Step 5: Solve for x
    x = 87,374.42/325.55
  6. Step 6: Final answer
    x = 268.39

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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.