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Finding the Fourth Proportional to 299.62, 447.40 and 245.62

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Solution

The fourth proportional to 299.62, 447.40 and 245.62 is: 366.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    299.62 : 447.40 = 245.62 : x
  2. Step 2: Convert to fraction form
    299.62/447.40 = 245.62/x
  3. Step 3: Cross multiply
    299.62x = 447.40 × 245.62
  4. Step 4: Simplify right side
    299.62x = 109,890.39
  5. Step 5: Solve for x
    x = 109,890.39/299.62
  6. Step 6: Final answer
    x = 366.77

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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.