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Finding the Fourth Proportional to 453.26, 678.27 and 445.97

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Solution

The fourth proportional to 453.26, 678.27 and 445.97 is: 667.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    453.26 : 678.27 = 445.97 : x
  2. Step 2: Convert to fraction form
    453.26/678.27 = 445.97/x
  3. Step 3: Cross multiply
    453.26x = 678.27 × 445.97
  4. Step 4: Simplify right side
    453.26x = 302,488.07
  5. Step 5: Solve for x
    x = 302,488.07/453.26
  6. Step 6: Final answer
    x = 667.36

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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.