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Finding the Fourth Proportional to 276.72, 382.10 and 194.10

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Solution

The fourth proportional to 276.72, 382.10 and 194.10 is: 268.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    276.72 : 382.10 = 194.10 : x
  2. Step 2: Convert to fraction form
    276.72/382.10 = 194.10/x
  3. Step 3: Cross multiply
    276.72x = 382.10 × 194.10
  4. Step 4: Simplify right side
    276.72x = 74,164.64
  5. Step 5: Solve for x
    x = 74,164.64/276.72
  6. Step 6: Final answer
    x = 268.01

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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.