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Finding the Fourth Proportional to 325.70, 449.44 and 194.68

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Solution

The fourth proportional to 325.70, 449.44 and 194.68 is: 268.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    325.70 : 449.44 = 194.68 : x
  2. Step 2: Convert to fraction form
    325.70/449.44 = 194.68/x
  3. Step 3: Cross multiply
    325.70x = 449.44 × 194.68
  4. Step 4: Simplify right side
    325.70x = 87,496.98
  5. Step 5: Solve for x
    x = 87,496.98/325.70
  6. Step 6: Final answer
    x = 268.64

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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.