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Finding the Fourth Proportional to 441.36, 608.94 and 392.04

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Solution

The fourth proportional to 441.36, 608.94 and 392.04 is: 540.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    441.36 : 608.94 = 392.04 : x
  2. Step 2: Convert to fraction form
    441.36/608.94 = 392.04/x
  3. Step 3: Cross multiply
    441.36x = 608.94 × 392.04
  4. Step 4: Simplify right side
    441.36x = 238,728.84
  5. Step 5: Solve for x
    x = 238,728.84/441.36
  6. Step 6: Final answer
    x = 540.89

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.