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Finding the Fourth Proportional to 453.26, 624.38 and 328.59

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Solution

The fourth proportional to 453.26, 624.38 and 328.59 is: 452.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    453.26 : 624.38 = 328.59 : x
  2. Step 2: Convert to fraction form
    453.26/624.38 = 328.59/x
  3. Step 3: Cross multiply
    453.26x = 624.38 × 328.59
  4. Step 4: Simplify right side
    453.26x = 205,163.38
  5. Step 5: Solve for x
    x = 205,163.38/453.26
  6. Step 6: Final answer
    x = 452.64

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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.