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Finding the Fourth Proportional to 625.96, 862.21 and 436.57

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Solution

The fourth proportional to 625.96, 862.21 and 436.57 is: 601.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    625.96 : 862.21 = 436.57 : x
  2. Step 2: Convert to fraction form
    625.96/862.21 = 436.57/x
  3. Step 3: Cross multiply
    625.96x = 862.21 × 436.57
  4. Step 4: Simplify right side
    625.96x = 376,420.09
  5. Step 5: Solve for x
    x = 376,420.09/625.96
  6. Step 6: Final answer
    x = 601.34

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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.