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Finding the Fourth Proportional to 463.26, 639.22 and 276.75

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Solution

The fourth proportional to 463.26, 639.22 and 276.75 is: 381.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    463.26 : 639.22 = 276.75 : x
  2. Step 2: Convert to fraction form
    463.26/639.22 = 276.75/x
  3. Step 3: Cross multiply
    463.26x = 639.22 × 276.75
  4. Step 4: Simplify right side
    463.26x = 176,904.14
  5. Step 5: Solve for x
    x = 176,904.14/463.26
  6. Step 6: Final answer
    x = 381.87

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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.