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Finding the Fourth Proportional to 416.15, 574.30 and 229.66

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Solution

The fourth proportional to 416.15, 574.30 and 229.66 is: 316.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    416.15 : 574.30 = 229.66 : x
  2. Step 2: Convert to fraction form
    416.15/574.30 = 229.66/x
  3. Step 3: Cross multiply
    416.15x = 574.30 × 229.66
  4. Step 4: Simplify right side
    416.15x = 131,892.10
  5. Step 5: Solve for x
    x = 131,892.10/416.15
  6. Step 6: Final answer
    x = 316.94

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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.