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Finding the Fourth Proportional to 514.26, 709.76 and 404.57

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Solution

The fourth proportional to 514.26, 709.76 and 404.57 is: 558.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    514.26 : 709.76 = 404.57 : x
  2. Step 2: Convert to fraction form
    514.26/709.76 = 404.57/x
  3. Step 3: Cross multiply
    514.26x = 709.76 × 404.57
  4. Step 4: Simplify right side
    514.26x = 287,147.60
  5. Step 5: Solve for x
    x = 287,147.60/514.26
  6. Step 6: Final answer
    x = 558.37

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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.