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Finding the Fourth Proportional to 416.54, 574.40 and 357.73

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Solution

The fourth proportional to 416.54, 574.40 and 357.73 is: 493.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    416.54 : 574.40 = 357.73 : x
  2. Step 2: Convert to fraction form
    416.54/574.40 = 357.73/x
  3. Step 3: Cross multiply
    416.54x = 574.40 × 357.73
  4. Step 4: Simplify right side
    416.54x = 205,476.57
  5. Step 5: Solve for x
    x = 205,476.57/416.54
  6. Step 6: Final answer
    x = 493.29

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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.