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Finding the Fourth Proportional to 572.18, 788.97 and 447.44

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Solution

The fourth proportional to 572.18, 788.97 and 447.44 is: 616.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    572.18 : 788.97 = 447.44 : x
  2. Step 2: Convert to fraction form
    572.18/788.97 = 447.44/x
  3. Step 3: Cross multiply
    572.18x = 788.97 × 447.44
  4. Step 4: Simplify right side
    572.18x = 353,016.74
  5. Step 5: Solve for x
    x = 353,016.74/572.18
  6. Step 6: Final answer
    x = 616.97

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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.