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Finding the Fourth Proportional to 626.28, 863.10 and 451.32

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Solution

The fourth proportional to 626.28, 863.10 and 451.32 is: 621.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    626.28 : 863.10 = 451.32 : x
  2. Step 2: Convert to fraction form
    626.28/863.10 = 451.32/x
  3. Step 3: Cross multiply
    626.28x = 863.10 × 451.32
  4. Step 4: Simplify right side
    626.28x = 389,534.29
  5. Step 5: Solve for x
    x = 389,534.29/626.28
  6. Step 6: Final answer
    x = 621.98

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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.