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Finding the Fourth Proportional to 572.22, 853.44 and 486.12

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Solution

The fourth proportional to 572.22, 853.44 and 486.12 is: 725.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    572.22 : 853.44 = 486.12 : x
  2. Step 2: Convert to fraction form
    572.22/853.44 = 486.12/x
  3. Step 3: Cross multiply
    572.22x = 853.44 × 486.12
  4. Step 4: Simplify right side
    572.22x = 414,874.25
  5. Step 5: Solve for x
    x = 414,874.25/572.22
  6. Step 6: Final answer
    x = 725.03

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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.