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Finding the Fourth Proportional to 185.46, 279.45 and 153.68

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Solution

The fourth proportional to 185.46, 279.45 and 153.68 is: 231.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    185.46 : 279.45 = 153.68 : x
  2. Step 2: Convert to fraction form
    185.46/279.45 = 153.68/x
  3. Step 3: Cross multiply
    185.46x = 279.45 × 153.68
  4. Step 4: Simplify right side
    185.46x = 42,945.88
  5. Step 5: Solve for x
    x = 42,945.88/185.46
  6. Step 6: Final answer
    x = 231.56

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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.