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Finding the Fourth Proportional to 286.74, 395.49 and 193.44

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Solution

The fourth proportional to 286.74, 395.49 and 193.44 is: 266.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    286.74 : 395.49 = 193.44 : x
  2. Step 2: Convert to fraction form
    286.74/395.49 = 193.44/x
  3. Step 3: Cross multiply
    286.74x = 395.49 × 193.44
  4. Step 4: Simplify right side
    286.74x = 76,503.59
  5. Step 5: Solve for x
    x = 76,503.59/286.74
  6. Step 6: Final answer
    x = 266.80

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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.