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Finding the Fourth Proportional to 326.48, 449.54 and 300.36

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Solution

The fourth proportional to 326.48, 449.54 and 300.36 is: 413.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    326.48 : 449.54 = 300.36 : x
  2. Step 2: Convert to fraction form
    326.48/449.54 = 300.36/x
  3. Step 3: Cross multiply
    326.48x = 449.54 × 300.36
  4. Step 4: Simplify right side
    326.48x = 135,022.90
  5. Step 5: Solve for x
    x = 135,022.90/326.48
  6. Step 6: Final answer
    x = 413.57

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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.