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Finding the Fourth Proportional to 133.95, 183.37 and 129.81

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Solution

The fourth proportional to 133.95, 183.37 and 129.81 is: 177.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    133.95 : 183.37 = 129.81 : x
  2. Step 2: Convert to fraction form
    133.95/183.37 = 129.81/x
  3. Step 3: Cross multiply
    133.95x = 183.37 × 129.81
  4. Step 4: Simplify right side
    133.95x = 23,802.94
  5. Step 5: Solve for x
    x = 23,802.94/133.95
  6. Step 6: Final answer
    x = 177.70

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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.