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Finding the Fourth Proportional to 238.21, 356.91 and 192.58

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Solution

The fourth proportional to 238.21, 356.91 and 192.58 is: 288.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    238.21 : 356.91 = 192.58 : x
  2. Step 2: Convert to fraction form
    238.21/356.91 = 192.58/x
  3. Step 3: Cross multiply
    238.21x = 356.91 × 192.58
  4. Step 4: Simplify right side
    238.21x = 68,733.73
  5. Step 5: Solve for x
    x = 68,733.73/238.21
  6. Step 6: Final answer
    x = 288.54

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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.