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Finding the Fourth Proportional to 276.99, 382.20 and 166.50

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Solution

The fourth proportional to 276.99, 382.20 and 166.50 is: 229.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    276.99 : 382.20 = 166.50 : x
  2. Step 2: Convert to fraction form
    276.99/382.20 = 166.50/x
  3. Step 3: Cross multiply
    276.99x = 382.20 × 166.50
  4. Step 4: Simplify right side
    276.99x = 63,636.30
  5. Step 5: Solve for x
    x = 63,636.30/276.99
  6. Step 6: Final answer
    x = 229.74

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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.