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Finding the Fourth Proportional to 133.65, 200.14 and 122.38

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Solution

The fourth proportional to 133.65, 200.14 and 122.38 is: 183.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    133.65 : 200.14 = 122.38 : x
  2. Step 2: Convert to fraction form
    133.65/200.14 = 122.38/x
  3. Step 3: Cross multiply
    133.65x = 200.14 × 122.38
  4. Step 4: Simplify right side
    133.65x = 24,492.79
  5. Step 5: Solve for x
    x = 24,492.79/133.65
  6. Step 6: Final answer
    x = 183.25

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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.