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Finding the Fourth Proportional to 299.60, 445.81 and 298.58

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Solution

The fourth proportional to 299.60, 445.81 and 298.58 is: 444.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    299.60 : 445.81 = 298.58 : x
  2. Step 2: Convert to fraction form
    299.60/445.81 = 298.58/x
  3. Step 3: Cross multiply
    299.60x = 445.81 × 298.58
  4. Step 4: Simplify right side
    299.60x = 133,109.94
  5. Step 5: Solve for x
    x = 133,109.94/299.60
  6. Step 6: Final answer
    x = 444.29

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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.