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Finding the Fourth Proportional to 550.43, 759.36 and 340.55

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Solution

The fourth proportional to 550.43, 759.36 and 340.55 is: 469.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    550.43 : 759.36 = 340.55 : x
  2. Step 2: Convert to fraction form
    550.43/759.36 = 340.55/x
  3. Step 3: Cross multiply
    550.43x = 759.36 × 340.55
  4. Step 4: Simplify right side
    550.43x = 258,600.05
  5. Step 5: Solve for x
    x = 258,600.05/550.43
  6. Step 6: Final answer
    x = 469.81

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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.