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Finding the Fourth Proportional to 625.64, 863.73 and 377.10

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Solution

The fourth proportional to 625.64, 863.73 and 377.10 is: 520.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    625.64 : 863.73 = 377.10 : x
  2. Step 2: Convert to fraction form
    625.64/863.73 = 377.10/x
  3. Step 3: Cross multiply
    625.64x = 863.73 × 377.10
  4. Step 4: Simplify right side
    625.64x = 325,712.58
  5. Step 5: Solve for x
    x = 325,712.58/625.64
  6. Step 6: Final answer
    x = 520.61

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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.