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Finding the Fourth Proportional to 403.11, 603.05 and 322.11

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Solution

The fourth proportional to 403.11, 603.05 and 322.11 is: 481.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    403.11 : 603.05 = 322.11 : x
  2. Step 2: Convert to fraction form
    403.11/603.05 = 322.11/x
  3. Step 3: Cross multiply
    403.11x = 603.05 × 322.11
  4. Step 4: Simplify right side
    403.11x = 194,246.82
  5. Step 5: Solve for x
    x = 194,246.82/403.11
  6. Step 6: Final answer
    x = 481.87

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.