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Finding the Fourth Proportional to 193.34, 289.36 and 138.33

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Solution

The fourth proportional to 193.34, 289.36 and 138.33 is: 207.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    193.34 : 289.36 = 138.33 : x
  2. Step 2: Convert to fraction form
    193.34/289.36 = 138.33/x
  3. Step 3: Cross multiply
    193.34x = 289.36 × 138.33
  4. Step 4: Simplify right side
    193.34x = 40,025.72
  5. Step 5: Solve for x
    x = 40,025.72/193.34
  6. Step 6: Final answer
    x = 207.03

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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.