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Finding the Fourth Proportional to 183.89, 253.73 and 118.38

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Solution

The fourth proportional to 183.89, 253.73 and 118.38 is: 163.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    183.89 : 253.73 = 118.38 : x
  2. Step 2: Convert to fraction form
    183.89/253.73 = 118.38/x
  3. Step 3: Cross multiply
    183.89x = 253.73 × 118.38
  4. Step 4: Simplify right side
    183.89x = 30,037.80
  5. Step 5: Solve for x
    x = 30,037.80/183.89
  6. Step 6: Final answer
    x = 163.34

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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.