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Finding the Fourth Proportional to 416.25, 574.56 and 300.15

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Solution

The fourth proportional to 416.25, 574.56 and 300.15 is: 414.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    416.25 : 574.56 = 300.15 : x
  2. Step 2: Convert to fraction form
    416.25/574.56 = 300.15/x
  3. Step 3: Cross multiply
    416.25x = 574.56 × 300.15
  4. Step 4: Simplify right side
    416.25x = 172,454.18
  5. Step 5: Solve for x
    x = 172,454.18/416.25
  6. Step 6: Final answer
    x = 414.30

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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.