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Finding the Fourth Proportional to 286.50, 395.35 and 249.64

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Solution

The fourth proportional to 286.50, 395.35 and 249.64 is: 344.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    286.50 : 395.35 = 249.64 : x
  2. Step 2: Convert to fraction form
    286.50/395.35 = 249.64/x
  3. Step 3: Cross multiply
    286.50x = 395.35 × 249.64
  4. Step 4: Simplify right side
    286.50x = 98,695.17
  5. Step 5: Solve for x
    x = 98,695.17/286.50
  6. Step 6: Final answer
    x = 344.49

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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.