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Finding the Fourth Proportional to 613.77, 847.04 and 351.83

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Solution

The fourth proportional to 613.77, 847.04 and 351.83 is: 485.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    613.77 : 847.04 = 351.83 : x
  2. Step 2: Convert to fraction form
    613.77/847.04 = 351.83/x
  3. Step 3: Cross multiply
    613.77x = 847.04 × 351.83
  4. Step 4: Simplify right side
    613.77x = 298,014.08
  5. Step 5: Solve for x
    x = 298,014.08/613.77
  6. Step 6: Final answer
    x = 485.55

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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.