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Finding the Fourth Proportional to 571.85, 789.23 and 323.18

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Solution

The fourth proportional to 571.85, 789.23 and 323.18 is: 446.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    571.85 : 789.23 = 323.18 : x
  2. Step 2: Convert to fraction form
    571.85/789.23 = 323.18/x
  3. Step 3: Cross multiply
    571.85x = 789.23 × 323.18
  4. Step 4: Simplify right side
    571.85x = 255,063.71
  5. Step 5: Solve for x
    x = 255,063.71/571.85
  6. Step 6: Final answer
    x = 446.03

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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.