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Finding the Fourth Proportional to 183.80, 253.68 and 142.52

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Solution

The fourth proportional to 183.80, 253.68 and 142.52 is: 196.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    183.80 : 253.68 = 142.52 : x
  2. Step 2: Convert to fraction form
    183.80/253.68 = 142.52/x
  3. Step 3: Cross multiply
    183.80x = 253.68 × 142.52
  4. Step 4: Simplify right side
    183.80x = 36,154.47
  5. Step 5: Solve for x
    x = 36,154.47/183.80
  6. Step 6: Final answer
    x = 196.71

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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.