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Finding the Fourth Proportional to 453.28, 678.84 and 270.04

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Solution

The fourth proportional to 453.28, 678.84 and 270.04 is: 404.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    453.28 : 678.84 = 270.04 : x
  2. Step 2: Convert to fraction form
    453.28/678.84 = 270.04/x
  3. Step 3: Cross multiply
    453.28x = 678.84 × 270.04
  4. Step 4: Simplify right side
    453.28x = 183,313.95
  5. Step 5: Solve for x
    x = 183,313.95/453.28
  6. Step 6: Final answer
    x = 404.42

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.