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Finding the Fourth Proportional to 193.82, 266.90 and 174.12

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Solution

The fourth proportional to 193.82, 266.90 and 174.12 is: 239.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    193.82 : 266.90 = 174.12 : x
  2. Step 2: Convert to fraction form
    193.82/266.90 = 174.12/x
  3. Step 3: Cross multiply
    193.82x = 266.90 × 174.12
  4. Step 4: Simplify right side
    193.82x = 46,472.63
  5. Step 5: Solve for x
    x = 46,472.63/193.82
  6. Step 6: Final answer
    x = 239.77

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.