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Finding the Fourth Proportional to 490.11, 740.72 and 481.60

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Solution

The fourth proportional to 490.11, 740.72 and 481.60 is: 727.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    490.11 : 740.72 = 481.60 : x
  2. Step 2: Convert to fraction form
    490.11/740.72 = 481.60/x
  3. Step 3: Cross multiply
    490.11x = 740.72 × 481.60
  4. Step 4: Simplify right side
    490.11x = 356,730.75
  5. Step 5: Solve for x
    x = 356,730.75/490.11
  6. Step 6: Final answer
    x = 727.86

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.