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Finding the Fourth Proportional to 613.40, 846.56 and 351.37

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Solution

The fourth proportional to 613.40, 846.56 and 351.37 is: 484.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    613.40 : 846.56 = 351.37 : x
  2. Step 2: Convert to fraction form
    613.40/846.56 = 351.37/x
  3. Step 3: Cross multiply
    613.40x = 846.56 × 351.37
  4. Step 4: Simplify right side
    613.40x = 297,449.80
  5. Step 5: Solve for x
    x = 297,449.80/613.40
  6. Step 6: Final answer
    x = 484.92

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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.