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Finding the Fourth Proportional to 326.13, 449.99 and 195.18

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Solution

The fourth proportional to 326.13, 449.99 and 195.18 is: 269.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    326.13 : 449.99 = 195.18 : x
  2. Step 2: Convert to fraction form
    326.13/449.99 = 195.18/x
  3. Step 3: Cross multiply
    326.13x = 449.99 × 195.18
  4. Step 4: Simplify right side
    326.13x = 87,829.05
  5. Step 5: Solve for x
    x = 87,829.05/326.13
  6. Step 6: Final answer
    x = 269.31

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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.