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Finding the Fourth Proportional to 325.63, 449.49 and 194.64

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Solution

The fourth proportional to 325.63, 449.49 and 194.64 is: 268.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    325.63 : 449.49 = 194.64 : x
  2. Step 2: Convert to fraction form
    325.63/449.49 = 194.64/x
  3. Step 3: Cross multiply
    325.63x = 449.49 × 194.64
  4. Step 4: Simplify right side
    325.63x = 87,488.73
  5. Step 5: Solve for x
    x = 87,488.73/325.63
  6. Step 6: Final answer
    x = 268.68

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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.