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Finding the Fourth Proportional to 236.68, 326.91 and 171.08

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Solution

The fourth proportional to 236.68, 326.91 and 171.08 is: 236.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    236.68 : 326.91 = 171.08 : x
  2. Step 2: Convert to fraction form
    236.68/326.91 = 171.08/x
  3. Step 3: Cross multiply
    236.68x = 326.91 × 171.08
  4. Step 4: Simplify right side
    236.68x = 55,927.76
  5. Step 5: Solve for x
    x = 55,927.76/236.68
  6. Step 6: Final answer
    x = 236.30

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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.