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Finding the Fourth Proportional to 286.97, 395.99 and 162.61

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Solution

The fourth proportional to 286.97, 395.99 and 162.61 is: 224.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    286.97 : 395.99 = 162.61 : x
  2. Step 2: Convert to fraction form
    286.97/395.99 = 162.61/x
  3. Step 3: Cross multiply
    286.97x = 395.99 × 162.61
  4. Step 4: Simplify right side
    286.97x = 64,392.05
  5. Step 5: Solve for x
    x = 64,392.05/286.97
  6. Step 6: Final answer
    x = 224.38

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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.