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Finding the Fourth Proportional to 481.88, 664.82 and 394.92

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Solution

The fourth proportional to 481.88, 664.82 and 394.92 is: 544.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    481.88 : 664.82 = 394.92 : x
  2. Step 2: Convert to fraction form
    481.88/664.82 = 394.92/x
  3. Step 3: Cross multiply
    481.88x = 664.82 × 394.92
  4. Step 4: Simplify right side
    481.88x = 262,550.71
  5. Step 5: Solve for x
    x = 262,550.71/481.88
  6. Step 6: Final answer
    x = 544.85

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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.