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Finding the Fourth Proportional to 571.52, 853.12 and 517.12

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Solution

The fourth proportional to 571.52, 853.12 and 517.12 is: 771.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    571.52 : 853.12 = 517.12 : x
  2. Step 2: Convert to fraction form
    571.52/853.12 = 517.12/x
  3. Step 3: Cross multiply
    571.52x = 853.12 × 517.12
  4. Step 4: Simplify right side
    571.52x = 441,165.41
  5. Step 5: Solve for x
    x = 441,165.41/571.52
  6. Step 6: Final answer
    x = 771.92

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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.