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Finding the Fourth Proportional to 550.58, 759.78 and 301.90

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Solution

The fourth proportional to 550.58, 759.78 and 301.90 is: 416.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    550.58 : 759.78 = 301.90 : x
  2. Step 2: Convert to fraction form
    550.58/759.78 = 301.90/x
  3. Step 3: Cross multiply
    550.58x = 759.78 × 301.90
  4. Step 4: Simplify right side
    550.58x = 229,375.71
  5. Step 5: Solve for x
    x = 229,375.71/550.58
  6. Step 6: Final answer
    x = 416.61

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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.