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Finding the Fourth Proportional to 238.98, 356.23 and 223.59

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Solution

The fourth proportional to 238.98, 356.23 and 223.59 is: 333.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    238.98 : 356.23 = 223.59 : x
  2. Step 2: Convert to fraction form
    238.98/356.23 = 223.59/x
  3. Step 3: Cross multiply
    238.98x = 356.23 × 223.59
  4. Step 4: Simplify right side
    238.98x = 79,649.47
  5. Step 5: Solve for x
    x = 79,649.47/238.98
  6. Step 6: Final answer
    x = 333.29

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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.