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Finding the Fourth Proportional to 625.44, 862.47 and 376.71

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Solution

The fourth proportional to 625.44, 862.47 and 376.71 is: 519.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    625.44 : 862.47 = 376.71 : x
  2. Step 2: Convert to fraction form
    625.44/862.47 = 376.71/x
  3. Step 3: Cross multiply
    625.44x = 862.47 × 376.71
  4. Step 4: Simplify right side
    625.44x = 324,901.07
  5. Step 5: Solve for x
    x = 324,901.07/625.44
  6. Step 6: Final answer
    x = 519.48

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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.