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Finding the Fourth Proportional to 299.23, 448.58 and 144.94

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Solution

The fourth proportional to 299.23, 448.58 and 144.94 is: 217.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    299.23 : 448.58 = 144.94 : x
  2. Step 2: Convert to fraction form
    299.23/448.58 = 144.94/x
  3. Step 3: Cross multiply
    299.23x = 448.58 × 144.94
  4. Step 4: Simplify right side
    299.23x = 65,016.25
  5. Step 5: Solve for x
    x = 65,016.25/299.23
  6. Step 6: Final answer
    x = 217.28

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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.