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Finding the Fourth Proportional to 208.50, 286.18 and 183.86

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Solution

The fourth proportional to 208.50, 286.18 and 183.86 is: 252.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    208.50 : 286.18 = 183.86 : x
  2. Step 2: Convert to fraction form
    208.50/286.18 = 183.86/x
  3. Step 3: Cross multiply
    208.50x = 286.18 × 183.86
  4. Step 4: Simplify right side
    208.50x = 52,617.05
  5. Step 5: Solve for x
    x = 52,617.05/208.50
  6. Step 6: Final answer
    x = 252.36

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.