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Finding the Fourth Proportional to 451.94, 622.67 and 395.87

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Solution

The fourth proportional to 451.94, 622.67 and 395.87 is: 545.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    451.94 : 622.67 = 395.87 : x
  2. Step 2: Convert to fraction form
    451.94/622.67 = 395.87/x
  3. Step 3: Cross multiply
    451.94x = 622.67 × 395.87
  4. Step 4: Simplify right side
    451.94x = 246,491.28
  5. Step 5: Solve for x
    x = 246,491.28/451.94
  6. Step 6: Final answer
    x = 545.41

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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.