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Finding the Fourth Proportional to 416.25, 574.56 and 261

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Solution

The fourth proportional to 416.25, 574.56 and 261 is: 360.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    416.25 : 574.56 = 261 : x
  2. Step 2: Convert to fraction form
    416.25/574.56 = 261/x
  3. Step 3: Cross multiply
    416.25x = 574.56 × 261
  4. Step 4: Simplify right side
    416.25x = 149,960.16
  5. Step 5: Solve for x
    x = 149,960.16/416.25
  6. Step 6: Final answer
    x = 360.26

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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.