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Finding the Fourth Proportional to 416.44, 575.46 and 329.80

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Solution

The fourth proportional to 416.44, 575.46 and 329.80 is: 455.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    416.44 : 575.46 = 329.80 : x
  2. Step 2: Convert to fraction form
    416.44/575.46 = 329.80/x
  3. Step 3: Cross multiply
    416.44x = 575.46 × 329.80
  4. Step 4: Simplify right side
    416.44x = 189,786.71
  5. Step 5: Solve for x
    x = 189,786.71/416.44
  6. Step 6: Final answer
    x = 455.74

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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.