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Finding the Fourth Proportional to 453.20, 625.22 and 276.11

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Solution

The fourth proportional to 453.20, 625.22 and 276.11 is: 380.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    453.20 : 625.22 = 276.11 : x
  2. Step 2: Convert to fraction form
    453.20/625.22 = 276.11/x
  3. Step 3: Cross multiply
    453.20x = 625.22 × 276.11
  4. Step 4: Simplify right side
    453.20x = 172,628.37
  5. Step 5: Solve for x
    x = 172,628.37/453.20
  6. Step 6: Final answer
    x = 380.91

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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.