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Finding the Fourth Proportional to 300.16, 414.24 and 261.44

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Solution

The fourth proportional to 300.16, 414.24 and 261.44 is: 360.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    300.16 : 414.24 = 261.44 : x
  2. Step 2: Convert to fraction form
    300.16/414.24 = 261.44/x
  3. Step 3: Cross multiply
    300.16x = 414.24 × 261.44
  4. Step 4: Simplify right side
    300.16x = 108,298.91
  5. Step 5: Solve for x
    x = 108,298.91/300.16
  6. Step 6: Final answer
    x = 360.80

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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.