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Finding the Fourth Proportional to 416.22, 574.49 and 258.87

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Solution

The fourth proportional to 416.22, 574.49 and 258.87 is: 357.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    416.22 : 574.49 = 258.87 : x
  2. Step 2: Convert to fraction form
    416.22/574.49 = 258.87/x
  3. Step 3: Cross multiply
    416.22x = 574.49 × 258.87
  4. Step 4: Simplify right side
    416.22x = 148,716.93
  5. Step 5: Solve for x
    x = 148,716.93/416.22
  6. Step 6: Final answer
    x = 357.30

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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.