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Finding the Fourth Proportional to 625.34, 863.32 and 376.72

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Solution

The fourth proportional to 625.34, 863.32 and 376.72 is: 520.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    625.34 : 863.32 = 376.72 : x
  2. Step 2: Convert to fraction form
    625.34/863.32 = 376.72/x
  3. Step 3: Cross multiply
    625.34x = 863.32 × 376.72
  4. Step 4: Simplify right side
    625.34x = 325,229.91
  5. Step 5: Solve for x
    x = 325,229.91/625.34
  6. Step 6: Final answer
    x = 520.08

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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.