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Finding the Fourth Proportional to 133.90, 185.59 and 131.47

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Solution

The fourth proportional to 133.90, 185.59 and 131.47 is: 182.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    133.90 : 185.59 = 131.47 : x
  2. Step 2: Convert to fraction form
    133.90/185.59 = 131.47/x
  3. Step 3: Cross multiply
    133.90x = 185.59 × 131.47
  4. Step 4: Simplify right side
    133.90x = 24,399.52
  5. Step 5: Solve for x
    x = 24,399.52/133.90
  6. Step 6: Final answer
    x = 182.22

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.