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Finding the Fourth Proportional to 571.92, 853.23 and 518.87

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Solution

The fourth proportional to 571.92, 853.23 and 518.87 is: 774.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    571.92 : 853.23 = 518.87 : x
  2. Step 2: Convert to fraction form
    571.92/853.23 = 518.87/x
  3. Step 3: Cross multiply
    571.92x = 853.23 × 518.87
  4. Step 4: Simplify right side
    571.92x = 442,715.45
  5. Step 5: Solve for x
    x = 442,715.45/571.92
  6. Step 6: Final answer
    x = 774.09

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.