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Finding the Fourth Proportional to 641.96, 886.07 and 376.44

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Solution

The fourth proportional to 641.96, 886.07 and 376.44 is: 519.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    641.96 : 886.07 = 376.44 : x
  2. Step 2: Convert to fraction form
    641.96/886.07 = 376.44/x
  3. Step 3: Cross multiply
    641.96x = 886.07 × 376.44
  4. Step 4: Simplify right side
    641.96x = 333,552.30
  5. Step 5: Solve for x
    x = 333,552.30/641.96
  6. Step 6: Final answer
    x = 519.59

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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.