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Finding the Fourth Proportional to 326.79, 493.31 and 324.97

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Solution

The fourth proportional to 326.79, 493.31 and 324.97 is: 490.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    326.79 : 493.31 = 324.97 : x
  2. Step 2: Convert to fraction form
    326.79/493.31 = 324.97/x
  3. Step 3: Cross multiply
    326.79x = 493.31 × 324.97
  4. Step 4: Simplify right side
    326.79x = 160,308.09
  5. Step 5: Solve for x
    x = 160,308.09/326.79
  6. Step 6: Final answer
    x = 490.55

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.