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Finding the Fourth Proportional to 236.70, 326.40 and 186.83

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Solution

The fourth proportional to 236.70, 326.40 and 186.83 is: 257.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    236.70 : 326.40 = 186.83 : x
  2. Step 2: Convert to fraction form
    236.70/326.40 = 186.83/x
  3. Step 3: Cross multiply
    236.70x = 326.40 × 186.83
  4. Step 4: Simplify right side
    236.70x = 60,981.75
  5. Step 5: Solve for x
    x = 60,981.75/236.70
  6. Step 6: Final answer
    x = 257.63

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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.