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Finding the Fourth Proportional to 571.20, 782.60 and 550.44

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Solution

The fourth proportional to 571.20, 782.60 and 550.44 is: 754.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    571.20 : 782.60 = 550.44 : x
  2. Step 2: Convert to fraction form
    571.20/782.60 = 550.44/x
  3. Step 3: Cross multiply
    571.20x = 782.60 × 550.44
  4. Step 4: Simplify right side
    571.20x = 430,771.59
  5. Step 5: Solve for x
    x = 430,771.59/571.20
  6. Step 6: Final answer
    x = 754.15

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.