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Finding the Fourth Proportional to 550.10, 825.15 and 225.39

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Solution

The fourth proportional to 550.10, 825.15 and 225.39 is: 338.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    550.10 : 825.15 = 225.39 : x
  2. Step 2: Convert to fraction form
    550.10/825.15 = 225.39/x
  3. Step 3: Cross multiply
    550.10x = 825.15 × 225.39
  4. Step 4: Simplify right side
    550.10x = 185,980.56
  5. Step 5: Solve for x
    x = 185,980.56/550.10
  6. Step 6: Final answer
    x = 338.09

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.