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Finding the Fourth Proportional to 133.36, 198.62 and 131.35

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Solution

The fourth proportional to 133.36, 198.62 and 131.35 is: 195.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    133.36 : 198.62 = 131.35 : x
  2. Step 2: Convert to fraction form
    133.36/198.62 = 131.35/x
  3. Step 3: Cross multiply
    133.36x = 198.62 × 131.35
  4. Step 4: Simplify right side
    133.36x = 26,088.74
  5. Step 5: Solve for x
    x = 26,088.74/133.36
  6. Step 6: Final answer
    x = 195.63

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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.