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Finding the Fourth Proportional to 133.45, 183.90 and 94.57

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Solution

The fourth proportional to 133.45, 183.90 and 94.57 is: 130.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    133.45 : 183.90 = 94.57 : x
  2. Step 2: Convert to fraction form
    133.45/183.90 = 94.57/x
  3. Step 3: Cross multiply
    133.45x = 183.90 × 94.57
  4. Step 4: Simplify right side
    133.45x = 17,390.96
  5. Step 5: Solve for x
    x = 17,390.96/133.45
  6. Step 6: Final answer
    x = 130.32

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.