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Finding the Fourth Proportional to 445.10, 613.52 and 351.68

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Solution

The fourth proportional to 445.10, 613.52 and 351.68 is: 484.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    445.10 : 613.52 = 351.68 : x
  2. Step 2: Convert to fraction form
    445.10/613.52 = 351.68/x
  3. Step 3: Cross multiply
    445.10x = 613.52 × 351.68
  4. Step 4: Simplify right side
    445.10x = 215,759.42
  5. Step 5: Solve for x
    x = 215,759.42/445.10
  6. Step 6: Final answer
    x = 484.75

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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.