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Finding the Fourth Proportional to 276.94, 382.21 and 160.50

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Solution

The fourth proportional to 276.94, 382.21 and 160.50 is: 221.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    276.94 : 382.21 = 160.50 : x
  2. Step 2: Convert to fraction form
    276.94/382.21 = 160.50/x
  3. Step 3: Cross multiply
    276.94x = 382.21 × 160.50
  4. Step 4: Simplify right side
    276.94x = 61,344.30
  5. Step 5: Solve for x
    x = 61,344.30/276.94
  6. Step 6: Final answer
    x = 221.51

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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.