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Finding the Fourth Proportional to 569.56, 853.19 and 447.25

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Solution

The fourth proportional to 569.56, 853.19 and 447.25 is: 669.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    569.56 : 853.19 = 447.25 : x
  2. Step 2: Convert to fraction form
    569.56/853.19 = 447.25/x
  3. Step 3: Cross multiply
    569.56x = 853.19 × 447.25
  4. Step 4: Simplify right side
    569.56x = 381,582.73
  5. Step 5: Solve for x
    x = 381,582.73/569.56
  6. Step 6: Final answer
    x = 669.97

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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.