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Finding the Fourth Proportional to 2,213.22, 3,319.80 and 569.76

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Solution

The fourth proportional to 2,213.22, 3,319.80 and 569.76 is: 854.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,213.22 : 3,319.80 = 569.76 : x
  2. Step 2: Convert to fraction form
    2,213.22/3,319.80 = 569.76/x
  3. Step 3: Cross multiply
    2,213.22x = 3,319.80 × 569.76
  4. Step 4: Simplify right side
    2,213.22x = 1,891,489.25
  5. Step 5: Solve for x
    x = 1,891,489.25/2,213.22
  6. Step 6: Final answer
    x = 854.63

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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.