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Finding the Fourth Proportional to 299.73, 449.84 and 256.67

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Solution

The fourth proportional to 299.73, 449.84 and 256.67 is: 385.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    299.73 : 449.84 = 256.67 : x
  2. Step 2: Convert to fraction form
    299.73/449.84 = 256.67/x
  3. Step 3: Cross multiply
    299.73x = 449.84 × 256.67
  4. Step 4: Simplify right side
    299.73x = 115,462.20
  5. Step 5: Solve for x
    x = 115,462.20/299.73
  6. Step 6: Final answer
    x = 385.22

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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.