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Finding the Fourth Proportional to 253.56, 381.83 and 181.92

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Solution

The fourth proportional to 253.56, 381.83 and 181.92 is: 273.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    253.56 : 381.83 = 181.92 : x
  2. Step 2: Convert to fraction form
    253.56/381.83 = 181.92/x
  3. Step 3: Cross multiply
    253.56x = 381.83 × 181.92
  4. Step 4: Simplify right side
    253.56x = 69,461.60
  5. Step 5: Solve for x
    x = 69,461.60/253.56
  6. Step 6: Final answer
    x = 273.95

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.