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Finding the Fourth Proportional to 481.38, 664.24 and 294.78

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Solution

The fourth proportional to 481.38, 664.24 and 294.78 is: 406.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    481.38 : 664.24 = 294.78 : x
  2. Step 2: Convert to fraction form
    481.38/664.24 = 294.78/x
  3. Step 3: Cross multiply
    481.38x = 664.24 × 294.78
  4. Step 4: Simplify right side
    481.38x = 195,804.67
  5. Step 5: Solve for x
    x = 195,804.67/481.38
  6. Step 6: Final answer
    x = 406.76

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Double scale
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1.5x scale

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.