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Finding the Fourth Proportional to 550.68, 759.90 and 301.98

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Solution

The fourth proportional to 550.68, 759.90 and 301.98 is: 416.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    550.68 : 759.90 = 301.98 : x
  2. Step 2: Convert to fraction form
    550.68/759.90 = 301.98/x
  3. Step 3: Cross multiply
    550.68x = 759.90 × 301.98
  4. Step 4: Simplify right side
    550.68x = 229,474.60
  5. Step 5: Solve for x
    x = 229,474.60/550.68
  6. Step 6: Final answer
    x = 416.71

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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.