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Finding the Fourth Proportional to 286.44, 395.20 and 162.08

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Solution

The fourth proportional to 286.44, 395.20 and 162.08 is: 223.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    286.44 : 395.20 = 162.08 : x
  2. Step 2: Convert to fraction form
    286.44/395.20 = 162.08/x
  3. Step 3: Cross multiply
    286.44x = 395.20 × 162.08
  4. Step 4: Simplify right side
    286.44x = 64,054.02
  5. Step 5: Solve for x
    x = 64,054.02/286.44
  6. Step 6: Final answer
    x = 223.62

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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.