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Finding the Fourth Proportional to 236.67, 326.63 and 153.80

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Solution

The fourth proportional to 236.67, 326.63 and 153.80 is: 212.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    236.67 : 326.63 = 153.80 : x
  2. Step 2: Convert to fraction form
    236.67/326.63 = 153.80/x
  3. Step 3: Cross multiply
    236.67x = 326.63 × 153.80
  4. Step 4: Simplify right side
    236.67x = 50,235.67
  5. Step 5: Solve for x
    x = 50,235.67/236.67
  6. Step 6: Final answer
    x = 212.26

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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.