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Finding the Fourth Proportional to 299.12, 450.44 and 261.06

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Solution

The fourth proportional to 299.12, 450.44 and 261.06 is: 393.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    299.12 : 450.44 = 261.06 : x
  2. Step 2: Convert to fraction form
    299.12/450.44 = 261.06/x
  3. Step 3: Cross multiply
    299.12x = 450.44 × 261.06
  4. Step 4: Simplify right side
    299.12x = 117,591.87
  5. Step 5: Solve for x
    x = 117,591.87/299.12
  6. Step 6: Final answer
    x = 393.13

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.