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Finding the Fourth Proportional to 616.66, 850.97 and 343.79

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Solution

The fourth proportional to 616.66, 850.97 and 343.79 is: 474.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    616.66 : 850.97 = 343.79 : x
  2. Step 2: Convert to fraction form
    616.66/850.97 = 343.79/x
  3. Step 3: Cross multiply
    616.66x = 850.97 × 343.79
  4. Step 4: Simplify right side
    616.66x = 292,555.38
  5. Step 5: Solve for x
    x = 292,555.38/616.66
  6. Step 6: Final answer
    x = 474.42

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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.