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Finding the Fourth Proportional to 408.39, 608.66 and 401.91

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Solution

The fourth proportional to 408.39, 608.66 and 401.91 is: 599.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    408.39 : 608.66 = 401.91 : x
  2. Step 2: Convert to fraction form
    408.39/608.66 = 401.91/x
  3. Step 3: Cross multiply
    408.39x = 608.66 × 401.91
  4. Step 4: Simplify right side
    408.39x = 244,624.53
  5. Step 5: Solve for x
    x = 244,624.53/408.39
  6. Step 6: Final answer
    x = 599.00

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These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.