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Finding the Fourth Proportional to 238.28, 355.57 and 236.48

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Solution

The fourth proportional to 238.28, 355.57 and 236.48 is: 352.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    238.28 : 355.57 = 236.48 : x
  2. Step 2: Convert to fraction form
    238.28/355.57 = 236.48/x
  3. Step 3: Cross multiply
    238.28x = 355.57 × 236.48
  4. Step 4: Simplify right side
    238.28x = 84,085.19
  5. Step 5: Solve for x
    x = 84,085.19/238.28
  6. Step 6: Final answer
    x = 352.88

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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.