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Finding the Fourth Proportional to 613.41, 846.89 and 403.96

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Solution

The fourth proportional to 613.41, 846.89 and 403.96 is: 557.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    613.41 : 846.89 = 403.96 : x
  2. Step 2: Convert to fraction form
    613.41/846.89 = 403.96/x
  3. Step 3: Cross multiply
    613.41x = 846.89 × 403.96
  4. Step 4: Simplify right side
    613.41x = 342,109.68
  5. Step 5: Solve for x
    x = 342,109.68/613.41
  6. Step 6: Final answer
    x = 557.72

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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.