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Finding the Fourth Proportional to 620.73, 862.23 and 610.81

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Solution

The fourth proportional to 620.73, 862.23 and 610.81 is: 848.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    620.73 : 862.23 = 610.81 : x
  2. Step 2: Convert to fraction form
    620.73/862.23 = 610.81/x
  3. Step 3: Cross multiply
    620.73x = 862.23 × 610.81
  4. Step 4: Simplify right side
    620.73x = 526,656.80
  5. Step 5: Solve for x
    x = 526,656.80/620.73
  6. Step 6: Final answer
    x = 848.44

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.