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Finding the Fourth Proportional to 326.48, 450.09 and 243.59

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Solution

The fourth proportional to 326.48, 450.09 and 243.59 is: 335.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    326.48 : 450.09 = 243.59 : x
  2. Step 2: Convert to fraction form
    326.48/450.09 = 243.59/x
  3. Step 3: Cross multiply
    326.48x = 450.09 × 243.59
  4. Step 4: Simplify right side
    326.48x = 109,635.17
  5. Step 5: Solve for x
    x = 109,635.17/326.48
  6. Step 6: Final answer
    x = 335.81

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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.