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Finding the Fourth Proportional to 141.54, 211.88 and 133.66

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Solution

The fourth proportional to 141.54, 211.88 and 133.66 is: 200.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    141.54 : 211.88 = 133.66 : x
  2. Step 2: Convert to fraction form
    141.54/211.88 = 133.66/x
  3. Step 3: Cross multiply
    141.54x = 211.88 × 133.66
  4. Step 4: Simplify right side
    141.54x = 28,319.88
  5. Step 5: Solve for x
    x = 28,319.88/141.54
  6. Step 6: Final answer
    x = 200.08

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.