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Finding the Fourth Proportional to 238.28, 357.06 and 192.38

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Solution

The fourth proportional to 238.28, 357.06 and 192.38 is: 288.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    238.28 : 357.06 = 192.38 : x
  2. Step 2: Convert to fraction form
    238.28/357.06 = 192.38/x
  3. Step 3: Cross multiply
    238.28x = 357.06 × 192.38
  4. Step 4: Simplify right side
    238.28x = 68,691.20
  5. Step 5: Solve for x
    x = 68,691.20/238.28
  6. Step 6: Final answer
    x = 288.28

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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.