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Finding the Fourth Proportional to 286.14, 395.64 and 273

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Solution

The fourth proportional to 286.14, 395.64 and 273 is: 377.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    286.14 : 395.64 = 273 : x
  2. Step 2: Convert to fraction form
    286.14/395.64 = 273/x
  3. Step 3: Cross multiply
    286.14x = 395.64 × 273
  4. Step 4: Simplify right side
    286.14x = 108,009.72
  5. Step 5: Solve for x
    x = 108,009.72/286.14
  6. Step 6: Final answer
    x = 377.47

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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.