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Finding the Fourth Proportional to 550.55, 826.20 and 225.91

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Solution

The fourth proportional to 550.55, 826.20 and 225.91 is: 339.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    550.55 : 826.20 = 225.91 : x
  2. Step 2: Convert to fraction form
    550.55/826.20 = 225.91/x
  3. Step 3: Cross multiply
    550.55x = 826.20 × 225.91
  4. Step 4: Simplify right side
    550.55x = 186,650.20
  5. Step 5: Solve for x
    x = 186,650.20/550.55
  6. Step 6: Final answer
    x = 339.03

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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.