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Finding the Fourth Proportional to 325.05, 449.54 and 280.83

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Solution

The fourth proportional to 325.05, 449.54 and 280.83 is: 388.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    325.05 : 449.54 = 280.83 : x
  2. Step 2: Convert to fraction form
    325.05/449.54 = 280.83/x
  3. Step 3: Cross multiply
    325.05x = 449.54 × 280.83
  4. Step 4: Simplify right side
    325.05x = 126,244.32
  5. Step 5: Solve for x
    x = 126,244.32/325.05
  6. Step 6: Final answer
    x = 388.38

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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.