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Finding the Fourth Proportional to 625.41, 863.13 and 450.86

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Solution

The fourth proportional to 625.41, 863.13 and 450.86 is: 622.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    625.41 : 863.13 = 450.86 : x
  2. Step 2: Convert to fraction form
    625.41/863.13 = 450.86/x
  3. Step 3: Cross multiply
    625.41x = 863.13 × 450.86
  4. Step 4: Simplify right side
    625.41x = 389,146.48
  5. Step 5: Solve for x
    x = 389,146.48/625.41
  6. Step 6: Final answer
    x = 622.23

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1.5x scale

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.