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Finding the Fourth Proportional to 572.22, 789.57 and 375.98

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Solution

The fourth proportional to 572.22, 789.57 and 375.98 is: 518.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    572.22 : 789.57 = 375.98 : x
  2. Step 2: Convert to fraction form
    572.22/789.57 = 375.98/x
  3. Step 3: Cross multiply
    572.22x = 789.57 × 375.98
  4. Step 4: Simplify right side
    572.22x = 296,858.58
  5. Step 5: Solve for x
    x = 296,858.58/572.22
  6. Step 6: Final answer
    x = 518.78

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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.