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Finding the Fourth Proportional to 572.69, 857.36 and 517.97

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Solution

The fourth proportional to 572.69, 857.36 and 517.97 is: 775.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    572.69 : 857.36 = 517.97 : x
  2. Step 2: Convert to fraction form
    572.69/857.36 = 517.97/x
  3. Step 3: Cross multiply
    572.69x = 857.36 × 517.97
  4. Step 4: Simplify right side
    572.69x = 444,092.13
  5. Step 5: Solve for x
    x = 444,092.13/572.69
  6. Step 6: Final answer
    x = 775.45

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.