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Finding the Fourth Proportional to 416.36, 574.79 and 322.89

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Solution

The fourth proportional to 416.36, 574.79 and 322.89 is: 445.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    416.36 : 574.79 = 322.89 : x
  2. Step 2: Convert to fraction form
    416.36/574.79 = 322.89/x
  3. Step 3: Cross multiply
    416.36x = 574.79 × 322.89
  4. Step 4: Simplify right side
    416.36x = 185,592.33
  5. Step 5: Solve for x
    x = 185,592.33/416.36
  6. Step 6: Final answer
    x = 445.76

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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.