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Finding the Fourth Proportional to 133.65, 183.60 and 109.01

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Solution

The fourth proportional to 133.65, 183.60 and 109.01 is: 149.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    133.65 : 183.60 = 109.01 : x
  2. Step 2: Convert to fraction form
    133.65/183.60 = 109.01/x
  3. Step 3: Cross multiply
    133.65x = 183.60 × 109.01
  4. Step 4: Simplify right side
    133.65x = 20,014.70
  5. Step 5: Solve for x
    x = 20,014.70/133.65
  6. Step 6: Final answer
    x = 149.75

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.