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Finding the Fourth Proportional to 236.39, 326.06 and 142.98

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Solution

The fourth proportional to 236.39, 326.06 and 142.98 is: 197.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    236.39 : 326.06 = 142.98 : x
  2. Step 2: Convert to fraction form
    236.39/326.06 = 142.98/x
  3. Step 3: Cross multiply
    236.39x = 326.06 × 142.98
  4. Step 4: Simplify right side
    236.39x = 46,618.43
  5. Step 5: Solve for x
    x = 46,618.43/236.39
  6. Step 6: Final answer
    x = 197.21

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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.