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Finding the Fourth Proportional to 236.39, 326.26 and 153.50

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Solution

The fourth proportional to 236.39, 326.26 and 153.50 is: 211.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    236.39 : 326.26 = 153.50 : x
  2. Step 2: Convert to fraction form
    236.39/326.26 = 153.50/x
  3. Step 3: Cross multiply
    236.39x = 326.26 × 153.50
  4. Step 4: Simplify right side
    236.39x = 50,079.47
  5. Step 5: Solve for x
    x = 50,079.47/236.39
  6. Step 6: Final answer
    x = 211.86

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.