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Finding the Fourth Proportional to 326.00, 489.17 and 249.45

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Solution

The fourth proportional to 326.00, 489.17 and 249.45 is: 374.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    326.00 : 489.17 = 249.45 : x
  2. Step 2: Convert to fraction form
    326.00/489.17 = 249.45/x
  3. Step 3: Cross multiply
    326.00x = 489.17 × 249.45
  4. Step 4: Simplify right side
    326.00x = 122,022.21
  5. Step 5: Solve for x
    x = 122,022.21/326.00
  6. Step 6: Final answer
    x = 374.31

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.