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Finding the Fourth Proportional to 572.10, 789.39 and 351.12

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Solution

The fourth proportional to 572.10, 789.39 and 351.12 is: 484.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    572.10 : 789.39 = 351.12 : x
  2. Step 2: Convert to fraction form
    572.10/789.39 = 351.12/x
  3. Step 3: Cross multiply
    572.10x = 789.39 × 351.12
  4. Step 4: Simplify right side
    572.10x = 277,170.62
  5. Step 5: Solve for x
    x = 277,170.62/572.10
  6. Step 6: Final answer
    x = 484.48

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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.