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Finding the Fourth Proportional to 404.86, 606.78 and 352.59

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Solution

The fourth proportional to 404.86, 606.78 and 352.59 is: 528.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    404.86 : 606.78 = 352.59 : x
  2. Step 2: Convert to fraction form
    404.86/606.78 = 352.59/x
  3. Step 3: Cross multiply
    404.86x = 606.78 × 352.59
  4. Step 4: Simplify right side
    404.86x = 213,944.56
  5. Step 5: Solve for x
    x = 213,944.56/404.86
  6. Step 6: Final answer
    x = 528.44

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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.