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Finding the Fourth Proportional to 276.94, 382.18 and 160.57

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Solution

The fourth proportional to 276.94, 382.18 and 160.57 is: 221.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    276.94 : 382.18 = 160.57 : x
  2. Step 2: Convert to fraction form
    276.94/382.18 = 160.57/x
  3. Step 3: Cross multiply
    276.94x = 382.18 × 160.57
  4. Step 4: Simplify right side
    276.94x = 61,365.29
  5. Step 5: Solve for x
    x = 61,365.29/276.94
  6. Step 6: Final answer
    x = 221.59

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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.