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Finding the Fourth Proportional to 641.93, 885.87 and 376.32

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Solution

The fourth proportional to 641.93, 885.87 and 376.32 is: 519.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    641.93 : 885.87 = 376.32 : x
  2. Step 2: Convert to fraction form
    641.93/885.87 = 376.32/x
  3. Step 3: Cross multiply
    641.93x = 885.87 × 376.32
  4. Step 4: Simplify right side
    641.93x = 333,367.11
  5. Step 5: Solve for x
    x = 333,367.11/641.93
  6. Step 6: Final answer
    x = 519.32

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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.