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Finding the Fourth Proportional to 133.64, 183.66 and 125.48

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Solution

The fourth proportional to 133.64, 183.66 and 125.48 is: 172.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    133.64 : 183.66 = 125.48 : x
  2. Step 2: Convert to fraction form
    133.64/183.66 = 125.48/x
  3. Step 3: Cross multiply
    133.64x = 183.66 × 125.48
  4. Step 4: Simplify right side
    133.64x = 23,045.66
  5. Step 5: Solve for x
    x = 23,045.66/133.64
  6. Step 6: Final answer
    x = 172.45

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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.