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Finding the Fourth Proportional to 276.82, 382.15 and 214.51

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Solution

The fourth proportional to 276.82, 382.15 and 214.51 is: 296.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    276.82 : 382.15 = 214.51 : x
  2. Step 2: Convert to fraction form
    276.82/382.15 = 214.51/x
  3. Step 3: Cross multiply
    276.82x = 382.15 × 214.51
  4. Step 4: Simplify right side
    276.82x = 81,974.62
  5. Step 5: Solve for x
    x = 81,974.62/276.82
  6. Step 6: Final answer
    x = 296.13

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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.