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Finding the Fourth Proportional to 414.03, 621.29 and 197.63

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Solution

The fourth proportional to 414.03, 621.29 and 197.63 is: 296.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    414.03 : 621.29 = 197.63 : x
  2. Step 2: Convert to fraction form
    414.03/621.29 = 197.63/x
  3. Step 3: Cross multiply
    414.03x = 621.29 × 197.63
  4. Step 4: Simplify right side
    414.03x = 122,785.54
  5. Step 5: Solve for x
    x = 122,785.54/414.03
  6. Step 6: Final answer
    x = 296.56

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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.