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Finding the Fourth Proportional to 571.76, 789.24 and 365.36

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Solution

The fourth proportional to 571.76, 789.24 and 365.36 is: 504.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    571.76 : 789.24 = 365.36 : x
  2. Step 2: Convert to fraction form
    571.76/789.24 = 365.36/x
  3. Step 3: Cross multiply
    571.76x = 789.24 × 365.36
  4. Step 4: Simplify right side
    571.76x = 288,356.73
  5. Step 5: Solve for x
    x = 288,356.73/571.76
  6. Step 6: Final answer
    x = 504.33

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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.