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Finding the Fourth Proportional to 141.21, 210.38 and 134.33

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Solution

The fourth proportional to 141.21, 210.38 and 134.33 is: 200.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    141.21 : 210.38 = 134.33 : x
  2. Step 2: Convert to fraction form
    141.21/210.38 = 134.33/x
  3. Step 3: Cross multiply
    141.21x = 210.38 × 134.33
  4. Step 4: Simplify right side
    141.21x = 28,258.62
  5. Step 5: Solve for x
    x = 28,258.62/141.21
  6. Step 6: Final answer
    x = 200.12

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.