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Finding the Fourth Proportional to 451.32, 622.77 and 252.17

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Solution

The fourth proportional to 451.32, 622.77 and 252.17 is: 347.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    451.32 : 622.77 = 252.17 : x
  2. Step 2: Convert to fraction form
    451.32/622.77 = 252.17/x
  3. Step 3: Cross multiply
    451.32x = 622.77 × 252.17
  4. Step 4: Simplify right side
    451.32x = 157,044.04
  5. Step 5: Solve for x
    x = 157,044.04/451.32
  6. Step 6: Final answer
    x = 347.96

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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.