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Finding the Fourth Proportional to 236.63, 326.40 and 157.97

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Solution

The fourth proportional to 236.63, 326.40 and 157.97 is: 217.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    236.63 : 326.40 = 157.97 : x
  2. Step 2: Convert to fraction form
    236.63/326.40 = 157.97/x
  3. Step 3: Cross multiply
    236.63x = 326.40 × 157.97
  4. Step 4: Simplify right side
    236.63x = 51,561.41
  5. Step 5: Solve for x
    x = 51,561.41/236.63
  6. Step 6: Final answer
    x = 217.90

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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.