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Finding the Fourth Proportional to 236.26, 354.39 and 91.94

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Solution

The fourth proportional to 236.26, 354.39 and 91.94 is: 137.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    236.26 : 354.39 = 91.94 : x
  2. Step 2: Convert to fraction form
    236.26/354.39 = 91.94/x
  3. Step 3: Cross multiply
    236.26x = 354.39 × 91.94
  4. Step 4: Simplify right side
    236.26x = 32,582.62
  5. Step 5: Solve for x
    x = 32,582.62/236.26
  6. Step 6: Final answer
    x = 137.91

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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.