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Finding the Fourth Proportional to 463.07, 638.75 and 276.44

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Solution

The fourth proportional to 463.07, 638.75 and 276.44 is: 381.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    463.07 : 638.75 = 276.44 : x
  2. Step 2: Convert to fraction form
    463.07/638.75 = 276.44/x
  3. Step 3: Cross multiply
    463.07x = 638.75 × 276.44
  4. Step 4: Simplify right side
    463.07x = 176,571.47
  5. Step 5: Solve for x
    x = 176,571.47/463.07
  6. Step 6: Final answer
    x = 381.31

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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.