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Finding the Fourth Proportional to 450.52, 622.08 and 395.92

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Solution

The fourth proportional to 450.52, 622.08 and 395.92 is: 546.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    450.52 : 622.08 = 395.92 : x
  2. Step 2: Convert to fraction form
    450.52/622.08 = 395.92/x
  3. Step 3: Cross multiply
    450.52x = 622.08 × 395.92
  4. Step 4: Simplify right side
    450.52x = 246,293.91
  5. Step 5: Solve for x
    x = 246,293.91/450.52
  6. Step 6: Final answer
    x = 546.69

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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.