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Finding the Fourth Proportional to 452.82, 622.86 and 378.09

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Solution

The fourth proportional to 452.82, 622.86 and 378.09 is: 520.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    452.82 : 622.86 = 378.09 : x
  2. Step 2: Convert to fraction form
    452.82/622.86 = 378.09/x
  3. Step 3: Cross multiply
    452.82x = 622.86 × 378.09
  4. Step 4: Simplify right side
    452.82x = 235,497.14
  5. Step 5: Solve for x
    x = 235,497.14/452.82
  6. Step 6: Final answer
    x = 520.07

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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.