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Finding the Fourth Proportional to 411.55, 617.73 and 335.41

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Solution

The fourth proportional to 411.55, 617.73 and 335.41 is: 503.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    411.55 : 617.73 = 335.41 : x
  2. Step 2: Convert to fraction form
    411.55/617.73 = 335.41/x
  3. Step 3: Cross multiply
    411.55x = 617.73 × 335.41
  4. Step 4: Simplify right side
    411.55x = 207,188.05
  5. Step 5: Solve for x
    x = 207,188.05/411.55
  6. Step 6: Final answer
    x = 503.44

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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.