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Finding the Fourth Proportional to 625.21, 862.44 and 376.38

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Solution

The fourth proportional to 625.21, 862.44 and 376.38 is: 519.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    625.21 : 862.44 = 376.38 : x
  2. Step 2: Convert to fraction form
    625.21/862.44 = 376.38/x
  3. Step 3: Cross multiply
    625.21x = 862.44 × 376.38
  4. Step 4: Simplify right side
    625.21x = 324,605.17
  5. Step 5: Solve for x
    x = 324,605.17/625.21
  6. Step 6: Final answer
    x = 519.20

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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.