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Finding the Fourth Proportional to 276.19, 380.97 and 165.64

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Solution

The fourth proportional to 276.19, 380.97 and 165.64 is: 228.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    276.19 : 380.97 = 165.64 : x
  2. Step 2: Convert to fraction form
    276.19/380.97 = 165.64/x
  3. Step 3: Cross multiply
    276.19x = 380.97 × 165.64
  4. Step 4: Simplify right side
    276.19x = 63,103.87
  5. Step 5: Solve for x
    x = 63,103.87/276.19
  6. Step 6: Final answer
    x = 228.48

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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.