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Finding the Fourth Proportional to 264.84, 396.88 and 136.68

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Solution

The fourth proportional to 264.84, 396.88 and 136.68 is: 204.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    264.84 : 396.88 = 136.68 : x
  2. Step 2: Convert to fraction form
    264.84/396.88 = 136.68/x
  3. Step 3: Cross multiply
    264.84x = 396.88 × 136.68
  4. Step 4: Simplify right side
    264.84x = 54,245.56
  5. Step 5: Solve for x
    x = 54,245.56/264.84
  6. Step 6: Final answer
    x = 204.82

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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.