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Finding the Fourth Proportional to 193.85, 290.75 and 135.89

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Solution

The fourth proportional to 193.85, 290.75 and 135.89 is: 203.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    193.85 : 290.75 = 135.89 : x
  2. Step 2: Convert to fraction form
    193.85/290.75 = 135.89/x
  3. Step 3: Cross multiply
    193.85x = 290.75 × 135.89
  4. Step 4: Simplify right side
    193.85x = 39,507.88
  5. Step 5: Solve for x
    x = 39,507.88/193.85
  6. Step 6: Final answer
    x = 203.81

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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.