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Finding the Fourth Proportional to 236.76, 326.66 and 159.13

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Solution

The fourth proportional to 236.76, 326.66 and 159.13 is: 219.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    236.76 : 326.66 = 159.13 : x
  2. Step 2: Convert to fraction form
    236.76/326.66 = 159.13/x
  3. Step 3: Cross multiply
    236.76x = 326.66 × 159.13
  4. Step 4: Simplify right side
    236.76x = 51,981.41
  5. Step 5: Solve for x
    x = 51,981.41/236.76
  6. Step 6: Final answer
    x = 219.55

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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.