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Finding the Fourth Proportional to 299.42, 446.74 and 255.59

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Solution

The fourth proportional to 299.42, 446.74 and 255.59 is: 381.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    299.42 : 446.74 = 255.59 : x
  2. Step 2: Convert to fraction form
    299.42/446.74 = 255.59/x
  3. Step 3: Cross multiply
    299.42x = 446.74 × 255.59
  4. Step 4: Simplify right side
    299.42x = 114,179.40
  5. Step 5: Solve for x
    x = 114,179.40/299.42
  6. Step 6: Final answer
    x = 381.34

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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.