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Finding the Fourth Proportional to 276.88, 412.85 and 247.36

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Solution

The fourth proportional to 276.88, 412.85 and 247.36 is: 368.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    276.88 : 412.85 = 247.36 : x
  2. Step 2: Convert to fraction form
    276.88/412.85 = 247.36/x
  3. Step 3: Cross multiply
    276.88x = 412.85 × 247.36
  4. Step 4: Simplify right side
    276.88x = 102,122.58
  5. Step 5: Solve for x
    x = 102,122.58/276.88
  6. Step 6: Final answer
    x = 368.83

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.