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Finding the Fourth Proportional to 453.28, 626.88 and 450.40

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Solution

The fourth proportional to 453.28, 626.88 and 450.40 is: 622.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    453.28 : 626.88 = 450.40 : x
  2. Step 2: Convert to fraction form
    453.28/626.88 = 450.40/x
  3. Step 3: Cross multiply
    453.28x = 626.88 × 450.40
  4. Step 4: Simplify right side
    453.28x = 282,346.75
  5. Step 5: Solve for x
    x = 282,346.75/453.28
  6. Step 6: Final answer
    x = 622.90

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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.