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Finding the Fourth Proportional to 298.73, 448.43 and 136.45

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Solution

The fourth proportional to 298.73, 448.43 and 136.45 is: 204.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    298.73 : 448.43 = 136.45 : x
  2. Step 2: Convert to fraction form
    298.73/448.43 = 136.45/x
  3. Step 3: Cross multiply
    298.73x = 448.43 × 136.45
  4. Step 4: Simplify right side
    298.73x = 61,187.49
  5. Step 5: Solve for x
    x = 61,187.49/298.73
  6. Step 6: Final answer
    x = 204.83

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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.