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Finding the Fourth Proportional to 572.05, 789.37 and 323.32

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Solution

The fourth proportional to 572.05, 789.37 and 323.32 is: 446.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    572.05 : 789.37 = 323.32 : x
  2. Step 2: Convert to fraction form
    572.05/789.37 = 323.32/x
  3. Step 3: Cross multiply
    572.05x = 789.37 × 323.32
  4. Step 4: Simplify right side
    572.05x = 255,219.11
  5. Step 5: Solve for x
    x = 255,219.11/572.05
  6. Step 6: Final answer
    x = 446.15

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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.