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Finding the Fourth Proportional to 416.28, 573.66 and 299.64

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Solution

The fourth proportional to 416.28, 573.66 and 299.64 is: 412.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    416.28 : 573.66 = 299.64 : x
  2. Step 2: Convert to fraction form
    416.28/573.66 = 299.64/x
  3. Step 3: Cross multiply
    416.28x = 573.66 × 299.64
  4. Step 4: Simplify right side
    416.28x = 171,891.48
  5. Step 5: Solve for x
    x = 171,891.48/416.28
  6. Step 6: Final answer
    x = 412.92

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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.