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Finding the Fourth Proportional to 453.26, 679.89 and 290.54

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Solution

The fourth proportional to 453.26, 679.89 and 290.54 is: 435.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    453.26 : 679.89 = 290.54 : x
  2. Step 2: Convert to fraction form
    453.26/679.89 = 290.54/x
  3. Step 3: Cross multiply
    453.26x = 679.89 × 290.54
  4. Step 4: Simplify right side
    453.26x = 197,535.24
  5. Step 5: Solve for x
    x = 197,535.24/453.26
  6. Step 6: Final answer
    x = 435.81

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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.