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Finding the Fourth Proportional to 451.13, 622.47 and 251.94

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Solution

The fourth proportional to 451.13, 622.47 and 251.94 is: 347.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    451.13 : 622.47 = 251.94 : x
  2. Step 2: Convert to fraction form
    451.13/622.47 = 251.94/x
  3. Step 3: Cross multiply
    451.13x = 622.47 × 251.94
  4. Step 4: Simplify right side
    451.13x = 156,825.09
  5. Step 5: Solve for x
    x = 156,825.09/451.13
  6. Step 6: Final answer
    x = 347.63

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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.