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Finding the Fourth Proportional to 299.21, 445.55 and 295.56

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Solution

The fourth proportional to 299.21, 445.55 and 295.56 is: 440.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    299.21 : 445.55 = 295.56 : x
  2. Step 2: Convert to fraction form
    299.21/445.55 = 295.56/x
  3. Step 3: Cross multiply
    299.21x = 445.55 × 295.56
  4. Step 4: Simplify right side
    299.21x = 131,685.28
  5. Step 5: Solve for x
    x = 131,685.28/299.21
  6. Step 6: Final answer
    x = 440.12

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.