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Finding the Fourth Proportional to 276.97, 415.23 and 208.36

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Solution

The fourth proportional to 276.97, 415.23 and 208.36 is: 312.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    276.97 : 415.23 = 208.36 : x
  2. Step 2: Convert to fraction form
    276.97/415.23 = 208.36/x
  3. Step 3: Cross multiply
    276.97x = 415.23 × 208.36
  4. Step 4: Simplify right side
    276.97x = 86,517.32
  5. Step 5: Solve for x
    x = 86,517.32/276.97
  6. Step 6: Final answer
    x = 312.37

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.