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Finding the Fourth Proportional to 276.62, 412.91 and 268.92

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Solution

The fourth proportional to 276.62, 412.91 and 268.92 is: 401.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    276.62 : 412.91 = 268.92 : x
  2. Step 2: Convert to fraction form
    276.62/412.91 = 268.92/x
  3. Step 3: Cross multiply
    276.62x = 412.91 × 268.92
  4. Step 4: Simplify right side
    276.62x = 111,038.41
  5. Step 5: Solve for x
    x = 111,038.41/276.62
  6. Step 6: Final answer
    x = 401.42

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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.