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Finding the Fourth Proportional to 326.08, 449.92 and 186.18

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Solution

The fourth proportional to 326.08, 449.92 and 186.18 is: 256.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    326.08 : 449.92 = 186.18 : x
  2. Step 2: Convert to fraction form
    326.08/449.92 = 186.18/x
  3. Step 3: Cross multiply
    326.08x = 449.92 × 186.18
  4. Step 4: Simplify right side
    326.08x = 83,766.11
  5. Step 5: Solve for x
    x = 83,766.11/326.08
  6. Step 6: Final answer
    x = 256.89

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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.