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Finding the Fourth Proportional to 133.74, 200.46 and 68.76

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Solution

The fourth proportional to 133.74, 200.46 and 68.76 is: 103.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    133.74 : 200.46 = 68.76 : x
  2. Step 2: Convert to fraction form
    133.74/200.46 = 68.76/x
  3. Step 3: Cross multiply
    133.74x = 200.46 × 68.76
  4. Step 4: Simplify right side
    133.74x = 13,783.63
  5. Step 5: Solve for x
    x = 13,783.63/133.74
  6. Step 6: Final answer
    x = 103.06

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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.