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Finding the Fourth Proportional to 550.46, 824.96 and 261.26

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Solution

The fourth proportional to 550.46, 824.96 and 261.26 is: 391.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    550.46 : 824.96 = 261.26 : x
  2. Step 2: Convert to fraction form
    550.46/824.96 = 261.26/x
  3. Step 3: Cross multiply
    550.46x = 824.96 × 261.26
  4. Step 4: Simplify right side
    550.46x = 215,529.05
  5. Step 5: Solve for x
    x = 215,529.05/550.46
  6. Step 6: Final answer
    x = 391.54

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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.