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Finding the Fourth Proportional to 893.88, 1,338.12 and 568.44

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Solution

The fourth proportional to 893.88, 1,338.12 and 568.44 is: 850.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    893.88 : 1,338.12 = 568.44 : x
  2. Step 2: Convert to fraction form
    893.88/1,338.12 = 568.44/x
  3. Step 3: Cross multiply
    893.88x = 1,338.12 × 568.44
  4. Step 4: Simplify right side
    893.88x = 760,640.93
  5. Step 5: Solve for x
    x = 760,640.93/893.88
  6. Step 6: Final answer
    x = 850.94

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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.