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Finding the Fourth Proportional to 140.21, 192.36 and 133.32

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Solution

The fourth proportional to 140.21, 192.36 and 133.32 is: 182.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    140.21 : 192.36 = 133.32 : x
  2. Step 2: Convert to fraction form
    140.21/192.36 = 133.32/x
  3. Step 3: Cross multiply
    140.21x = 192.36 × 133.32
  4. Step 4: Simplify right side
    140.21x = 25,645.44
  5. Step 5: Solve for x
    x = 25,645.44/140.21
  6. Step 6: Final answer
    x = 182.91

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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.