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Finding the Fourth Proportional to 617.36, 850.42 and 451.12

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Solution

The fourth proportional to 617.36, 850.42 and 451.12 is: 621.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    617.36 : 850.42 = 451.12 : x
  2. Step 2: Convert to fraction form
    617.36/850.42 = 451.12/x
  3. Step 3: Cross multiply
    617.36x = 850.42 × 451.12
  4. Step 4: Simplify right side
    617.36x = 383,641.47
  5. Step 5: Solve for x
    x = 383,641.47/617.36
  6. Step 6: Final answer
    x = 621.42

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Why These Related Problems?

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