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Finding the Fourth Proportional to 625.85, 863.30 and 468.54

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Solution

The fourth proportional to 625.85, 863.30 and 468.54 is: 646.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    625.85 : 863.30 = 468.54 : x
  2. Step 2: Convert to fraction form
    625.85/863.30 = 468.54/x
  3. Step 3: Cross multiply
    625.85x = 863.30 × 468.54
  4. Step 4: Simplify right side
    625.85x = 404,491.75
  5. Step 5: Solve for x
    x = 404,491.75/625.85
  6. Step 6: Final answer
    x = 646.31

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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.