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Finding the Fourth Proportional to 551.31, 826.81 and 226.60

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Solution

The fourth proportional to 551.31, 826.81 and 226.60 is: 339.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    551.31 : 826.81 = 226.60 : x
  2. Step 2: Convert to fraction form
    551.31/826.81 = 226.60/x
  3. Step 3: Cross multiply
    551.31x = 826.81 × 226.60
  4. Step 4: Simplify right side
    551.31x = 187,352.51
  5. Step 5: Solve for x
    x = 187,352.51/551.31
  6. Step 6: Final answer
    x = 339.83

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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.