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Finding the Fourth Proportional to 286.95, 395.98 and 162.59

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Solution

The fourth proportional to 286.95, 395.98 and 162.59 is: 224.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    286.95 : 395.98 = 162.59 : x
  2. Step 2: Convert to fraction form
    286.95/395.98 = 162.59/x
  3. Step 3: Cross multiply
    286.95x = 395.98 × 162.59
  4. Step 4: Simplify right side
    286.95x = 64,382.39
  5. Step 5: Solve for x
    x = 64,382.39/286.95
  6. Step 6: Final answer
    x = 224.37

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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.