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Finding the Fourth Proportional to 226.31, 339.35 and 104.47

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Solution

The fourth proportional to 226.31, 339.35 and 104.47 is: 156.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    226.31 : 339.35 = 104.47 : x
  2. Step 2: Convert to fraction form
    226.31/339.35 = 104.47/x
  3. Step 3: Cross multiply
    226.31x = 339.35 × 104.47
  4. Step 4: Simplify right side
    226.31x = 35,449.68
  5. Step 5: Solve for x
    x = 35,449.68/226.31
  6. Step 6: Final answer
    x = 156.64

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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.