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Finding the Fourth Proportional to 651.18, 893.34 and 620.22

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Solution

The fourth proportional to 651.18, 893.34 and 620.22 is: 850.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    651.18 : 893.34 = 620.22 : x
  2. Step 2: Convert to fraction form
    651.18/893.34 = 620.22/x
  3. Step 3: Cross multiply
    651.18x = 893.34 × 620.22
  4. Step 4: Simplify right side
    651.18x = 554,067.33
  5. Step 5: Solve for x
    x = 554,067.33/651.18
  6. Step 6: Final answer
    x = 850.87

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.