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Finding the Fourth Proportional to 299.22, 448.64 and 136.70

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Solution

The fourth proportional to 299.22, 448.64 and 136.70 is: 204.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    299.22 : 448.64 = 136.70 : x
  2. Step 2: Convert to fraction form
    299.22/448.64 = 136.70/x
  3. Step 3: Cross multiply
    299.22x = 448.64 × 136.70
  4. Step 4: Simplify right side
    299.22x = 61,327.19
  5. Step 5: Solve for x
    x = 61,327.19/299.22
  6. Step 6: Final answer
    x = 204.96

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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.