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Finding the Fourth Proportional to 236.28, 353.04 and 187.68

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Solution

The fourth proportional to 236.28, 353.04 and 187.68 is: 280.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    236.28 : 353.04 = 187.68 : x
  2. Step 2: Convert to fraction form
    236.28/353.04 = 187.68/x
  3. Step 3: Cross multiply
    236.28x = 353.04 × 187.68
  4. Step 4: Simplify right side
    236.28x = 66,258.55
  5. Step 5: Solve for x
    x = 66,258.55/236.28
  6. Step 6: Final answer
    x = 280.42

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.