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Finding the Fourth Proportional to 298.56, 448.12 and 136.32

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Solution

The fourth proportional to 298.56, 448.12 and 136.32 is: 204.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    298.56 : 448.12 = 136.32 : x
  2. Step 2: Convert to fraction form
    298.56/448.12 = 136.32/x
  3. Step 3: Cross multiply
    298.56x = 448.12 × 136.32
  4. Step 4: Simplify right side
    298.56x = 61,087.72
  5. Step 5: Solve for x
    x = 61,087.72/298.56
  6. Step 6: Final answer
    x = 204.61

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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.