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Finding the Fourth Proportional to 416.82, 624.82 and 343.92

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Solution

The fourth proportional to 416.82, 624.82 and 343.92 is: 515.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    416.82 : 624.82 = 343.92 : x
  2. Step 2: Convert to fraction form
    416.82/624.82 = 343.92/x
  3. Step 3: Cross multiply
    416.82x = 624.82 × 343.92
  4. Step 4: Simplify right side
    416.82x = 214,888.09
  5. Step 5: Solve for x
    x = 214,888.09/416.82
  6. Step 6: Final answer
    x = 515.54

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.