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Finding the Fourth Proportional to 133.95, 185.01 and 118.45

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Solution

The fourth proportional to 133.95, 185.01 and 118.45 is: 163.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    133.95 : 185.01 = 118.45 : x
  2. Step 2: Convert to fraction form
    133.95/185.01 = 118.45/x
  3. Step 3: Cross multiply
    133.95x = 185.01 × 118.45
  4. Step 4: Simplify right side
    133.95x = 21,914.43
  5. Step 5: Solve for x
    x = 21,914.43/133.95
  6. Step 6: Final answer
    x = 163.60

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.