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Finding the Fourth Proportional to 412.52, 618.84 and 220.04

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Solution

The fourth proportional to 412.52, 618.84 and 220.04 is: 330.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    412.52 : 618.84 = 220.04 : x
  2. Step 2: Convert to fraction form
    412.52/618.84 = 220.04/x
  3. Step 3: Cross multiply
    412.52x = 618.84 × 220.04
  4. Step 4: Simplify right side
    412.52x = 136,169.55
  5. Step 5: Solve for x
    x = 136,169.55/412.52
  6. Step 6: Final answer
    x = 330.09

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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.