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Finding the Fourth Proportional to 238.22, 357.42 and 189.14

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Solution

The fourth proportional to 238.22, 357.42 and 189.14 is: 283.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    238.22 : 357.42 = 189.14 : x
  2. Step 2: Convert to fraction form
    238.22/357.42 = 189.14/x
  3. Step 3: Cross multiply
    238.22x = 357.42 × 189.14
  4. Step 4: Simplify right side
    238.22x = 67,602.42
  5. Step 5: Solve for x
    x = 67,602.42/238.22
  6. Step 6: Final answer
    x = 283.78

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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.