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Finding the Fourth Proportional to 236.47, 326.30 and 131.56

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Solution

The fourth proportional to 236.47, 326.30 and 131.56 is: 181.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    236.47 : 326.30 = 131.56 : x
  2. Step 2: Convert to fraction form
    236.47/326.30 = 131.56/x
  3. Step 3: Cross multiply
    236.47x = 326.30 × 131.56
  4. Step 4: Simplify right side
    236.47x = 42,928.03
  5. Step 5: Solve for x
    x = 42,928.03/236.47
  6. Step 6: Final answer
    x = 181.54

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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.