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Finding the Fourth Proportional to 416.73, 625.40 and 211.33

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Solution

The fourth proportional to 416.73, 625.40 and 211.33 is: 317.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    416.73 : 625.40 = 211.33 : x
  2. Step 2: Convert to fraction form
    416.73/625.40 = 211.33/x
  3. Step 3: Cross multiply
    416.73x = 625.40 × 211.33
  4. Step 4: Simplify right side
    416.73x = 132,165.78
  5. Step 5: Solve for x
    x = 132,165.78/416.73
  6. Step 6: Final answer
    x = 317.15

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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.