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Finding the Fourth Proportional to 286.83, 395.78 and 162.48

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Solution

The fourth proportional to 286.83, 395.78 and 162.48 is: 224.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    286.83 : 395.78 = 162.48 : x
  2. Step 2: Convert to fraction form
    286.83/395.78 = 162.48/x
  3. Step 3: Cross multiply
    286.83x = 395.78 × 162.48
  4. Step 4: Simplify right side
    286.83x = 64,306.33
  5. Step 5: Solve for x
    x = 64,306.33/286.83
  6. Step 6: Final answer
    x = 224.20

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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.