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Finding the Fourth Proportional to 236.31, 326.06 and 136.71

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Solution

The fourth proportional to 236.31, 326.06 and 136.71 is: 188.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    236.31 : 326.06 = 136.71 : x
  2. Step 2: Convert to fraction form
    236.31/326.06 = 136.71/x
  3. Step 3: Cross multiply
    236.31x = 326.06 × 136.71
  4. Step 4: Simplify right side
    236.31x = 44,574.98
  5. Step 5: Solve for x
    x = 44,574.98/236.31
  6. Step 6: Final answer
    x = 188.63

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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.