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Finding the Fourth Proportional to 550.91, 759.63 and 351.48

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Solution

The fourth proportional to 550.91, 759.63 and 351.48 is: 484.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    550.91 : 759.63 = 351.48 : x
  2. Step 2: Convert to fraction form
    550.91/759.63 = 351.48/x
  3. Step 3: Cross multiply
    550.91x = 759.63 × 351.48
  4. Step 4: Simplify right side
    550.91x = 266,993.55
  5. Step 5: Solve for x
    x = 266,993.55/550.91
  6. Step 6: Final answer
    x = 484.64

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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.