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Finding the Fourth Proportional to 326.02, 449.89 and 186.15

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Solution

The fourth proportional to 326.02, 449.89 and 186.15 is: 256.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    326.02 : 449.89 = 186.15 : x
  2. Step 2: Convert to fraction form
    326.02/449.89 = 186.15/x
  3. Step 3: Cross multiply
    326.02x = 449.89 × 186.15
  4. Step 4: Simplify right side
    326.02x = 83,747.02
  5. Step 5: Solve for x
    x = 83,747.02/326.02
  6. Step 6: Final answer
    x = 256.88

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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.