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Finding the Fourth Proportional to 550.37, 760.98 and 481.20

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Solution

The fourth proportional to 550.37, 760.98 and 481.20 is: 665.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    550.37 : 760.98 = 481.20 : x
  2. Step 2: Convert to fraction form
    550.37/760.98 = 481.20/x
  3. Step 3: Cross multiply
    550.37x = 760.98 × 481.20
  4. Step 4: Simplify right side
    550.37x = 366,183.58
  5. Step 5: Solve for x
    x = 366,183.58/550.37
  6. Step 6: Final answer
    x = 665.35

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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.