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Finding the Fourth Proportional to 416.54, 574.90 and 261.26

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Solution

The fourth proportional to 416.54, 574.90 and 261.26 is: 360.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    416.54 : 574.90 = 261.26 : x
  2. Step 2: Convert to fraction form
    416.54/574.90 = 261.26/x
  3. Step 3: Cross multiply
    416.54x = 574.90 × 261.26
  4. Step 4: Simplify right side
    416.54x = 150,198.37
  5. Step 5: Solve for x
    x = 150,198.37/416.54
  6. Step 6: Final answer
    x = 360.59

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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.