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Finding the Fourth Proportional to 613.14, 845.91 and 403.43

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Solution

The fourth proportional to 613.14, 845.91 and 403.43 is: 556.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    613.14 : 845.91 = 403.43 : x
  2. Step 2: Convert to fraction form
    613.14/845.91 = 403.43/x
  3. Step 3: Cross multiply
    613.14x = 845.91 × 403.43
  4. Step 4: Simplify right side
    613.14x = 341,267.59
  5. Step 5: Solve for x
    x = 341,267.59/613.14
  6. Step 6: Final answer
    x = 556.59

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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.