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Finding the Fourth Proportional to 613.48, 846.16 and 351.40

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Solution

The fourth proportional to 613.48, 846.16 and 351.40 is: 484.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    613.48 : 846.16 = 351.40 : x
  2. Step 2: Convert to fraction form
    613.48/846.16 = 351.40/x
  3. Step 3: Cross multiply
    613.48x = 846.16 × 351.40
  4. Step 4: Simplify right side
    613.48x = 297,340.62
  5. Step 5: Solve for x
    x = 297,340.62/613.48
  6. Step 6: Final answer
    x = 484.68

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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.