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Finding the Fourth Proportional to 193.38, 288.71 and 181.78

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Solution

The fourth proportional to 193.38, 288.71 and 181.78 is: 271.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    193.38 : 288.71 = 181.78 : x
  2. Step 2: Convert to fraction form
    193.38/288.71 = 181.78/x
  3. Step 3: Cross multiply
    193.38x = 288.71 × 181.78
  4. Step 4: Simplify right side
    193.38x = 52,480.79
  5. Step 5: Solve for x
    x = 52,480.79/193.38
  6. Step 6: Final answer
    x = 271.39

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.