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Finding the Fourth Proportional to 625.02, 863.38 and 543.22

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Solution

The fourth proportional to 625.02, 863.38 and 543.22 is: 750.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    625.02 : 863.38 = 543.22 : x
  2. Step 2: Convert to fraction form
    625.02/863.38 = 543.22/x
  3. Step 3: Cross multiply
    625.02x = 863.38 × 543.22
  4. Step 4: Simplify right side
    625.02x = 469,005.28
  5. Step 5: Solve for x
    x = 469,005.28/625.02
  6. Step 6: Final answer
    x = 750.38

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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.