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Finding the Fourth Proportional to 238.31, 356.86 and 199.69

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Solution

The fourth proportional to 238.31, 356.86 and 199.69 is: 299.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    238.31 : 356.86 = 199.69 : x
  2. Step 2: Convert to fraction form
    238.31/356.86 = 199.69/x
  3. Step 3: Cross multiply
    238.31x = 356.86 × 199.69
  4. Step 4: Simplify right side
    238.31x = 71,261.37
  5. Step 5: Solve for x
    x = 71,261.37/238.31
  6. Step 6: Final answer
    x = 299.03

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.