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Finding the Fourth Proportional to 299.72, 449.94 and 203.24

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Solution

The fourth proportional to 299.72, 449.94 and 203.24 is: 305.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    299.72 : 449.94 = 203.24 : x
  2. Step 2: Convert to fraction form
    299.72/449.94 = 203.24/x
  3. Step 3: Cross multiply
    299.72x = 449.94 × 203.24
  4. Step 4: Simplify right side
    299.72x = 91,445.81
  5. Step 5: Solve for x
    x = 91,445.81/299.72
  6. Step 6: Final answer
    x = 305.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.