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Finding the Fourth Proportional to 621.05, 930.11 and 364.73

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Solution

The fourth proportional to 621.05, 930.11 and 364.73 is: 546.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    621.05 : 930.11 = 364.73 : x
  2. Step 2: Convert to fraction form
    621.05/930.11 = 364.73/x
  3. Step 3: Cross multiply
    621.05x = 930.11 × 364.73
  4. Step 4: Simplify right side
    621.05x = 339,233.46
  5. Step 5: Solve for x
    x = 339,233.46/621.05
  6. Step 6: Final answer
    x = 546.23

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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.