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Finding the Fourth Proportional to 612.82, 845.60 and 350.78

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Solution

The fourth proportional to 612.82, 845.60 and 350.78 is: 484.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    612.82 : 845.60 = 350.78 : x
  2. Step 2: Convert to fraction form
    612.82/845.60 = 350.78/x
  3. Step 3: Cross multiply
    612.82x = 845.60 × 350.78
  4. Step 4: Simplify right side
    612.82x = 296,619.57
  5. Step 5: Solve for x
    x = 296,619.57/612.82
  6. Step 6: Final answer
    x = 484.02

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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.