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Finding the Fourth Proportional to 238.36, 355.60 and 223.80

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Solution

The fourth proportional to 238.36, 355.60 and 223.80 is: 333.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    238.36 : 355.60 = 223.80 : x
  2. Step 2: Convert to fraction form
    238.36/355.60 = 223.80/x
  3. Step 3: Cross multiply
    238.36x = 355.60 × 223.80
  4. Step 4: Simplify right side
    238.36x = 79,583.28
  5. Step 5: Solve for x
    x = 79,583.28/238.36
  6. Step 6: Final answer
    x = 333.88

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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.