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Finding the Fourth Proportional to 185.36, 279.12 and 162.78

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Solution

The fourth proportional to 185.36, 279.12 and 162.78 is: 245.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    185.36 : 279.12 = 162.78 : x
  2. Step 2: Convert to fraction form
    185.36/279.12 = 162.78/x
  3. Step 3: Cross multiply
    185.36x = 279.12 × 162.78
  4. Step 4: Simplify right side
    185.36x = 45,435.15
  5. Step 5: Solve for x
    x = 45,435.15/185.36
  6. Step 6: Final answer
    x = 245.12

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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.