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Finding the Fourth Proportional to 416.60, 574.70 and 261.26

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Solution

The fourth proportional to 416.60, 574.70 and 261.26 is: 360.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    416.60 : 574.70 = 261.26 : x
  2. Step 2: Convert to fraction form
    416.60/574.70 = 261.26/x
  3. Step 3: Cross multiply
    416.60x = 574.70 × 261.26
  4. Step 4: Simplify right side
    416.60x = 150,146.12
  5. Step 5: Solve for x
    x = 150,146.12/416.60
  6. Step 6: Final answer
    x = 360.41

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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.