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Finding the Fourth Proportional to 613.75, 847.10 and 404.26

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Solution

The fourth proportional to 613.75, 847.10 and 404.26 is: 557.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    613.75 : 847.10 = 404.26 : x
  2. Step 2: Convert to fraction form
    613.75/847.10 = 404.26/x
  3. Step 3: Cross multiply
    613.75x = 847.10 × 404.26
  4. Step 4: Simplify right side
    613.75x = 342,452.30
  5. Step 5: Solve for x
    x = 342,452.30/613.75
  6. Step 6: Final answer
    x = 557.97

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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.