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Finding the Fourth Proportional to 393.22, 589.62 and 119.23

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Solution

The fourth proportional to 393.22, 589.62 and 119.23 is: 178.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    393.22 : 589.62 = 119.23 : x
  2. Step 2: Convert to fraction form
    393.22/589.62 = 119.23/x
  3. Step 3: Cross multiply
    393.22x = 589.62 × 119.23
  4. Step 4: Simplify right side
    393.22x = 70,300.39
  5. Step 5: Solve for x
    x = 70,300.39/393.22
  6. Step 6: Final answer
    x = 178.78

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