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Finding the Fourth Proportional to 235.11, 352.41 and 105.09

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Solution

The fourth proportional to 235.11, 352.41 and 105.09 is: 157.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    235.11 : 352.41 = 105.09 : x
  2. Step 2: Convert to fraction form
    235.11/352.41 = 105.09/x
  3. Step 3: Cross multiply
    235.11x = 352.41 × 105.09
  4. Step 4: Simplify right side
    235.11x = 37,034.77
  5. Step 5: Solve for x
    x = 37,034.77/235.11
  6. Step 6: Final answer
    x = 157.52

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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.