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Finding the Fourth Proportional to 621.39, 930.03 and 376.73

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Solution

The fourth proportional to 621.39, 930.03 and 376.73 is: 563.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    621.39 : 930.03 = 376.73 : x
  2. Step 2: Convert to fraction form
    621.39/930.03 = 376.73/x
  3. Step 3: Cross multiply
    621.39x = 930.03 × 376.73
  4. Step 4: Simplify right side
    621.39x = 350,365.55
  5. Step 5: Solve for x
    x = 350,365.55/621.39
  6. Step 6: Final answer
    x = 563.84

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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.