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Finding the Fourth Proportional to 551.09, 825.90 and 331.58

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Solution

The fourth proportional to 551.09, 825.90 and 331.58 is: 496.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    551.09 : 825.90 = 331.58 : x
  2. Step 2: Convert to fraction form
    551.09/825.90 = 331.58/x
  3. Step 3: Cross multiply
    551.09x = 825.90 × 331.58
  4. Step 4: Simplify right side
    551.09x = 273,847.79
  5. Step 5: Solve for x
    x = 273,847.79/551.09
  6. Step 6: Final answer
    x = 496.92

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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.