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Finding the Fourth Proportional to 178.82, 245.73 and 170.79

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Solution

The fourth proportional to 178.82, 245.73 and 170.79 is: 234.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    178.82 : 245.73 = 170.79 : x
  2. Step 2: Convert to fraction form
    178.82/245.73 = 170.79/x
  3. Step 3: Cross multiply
    178.82x = 245.73 × 170.79
  4. Step 4: Simplify right side
    178.82x = 41,968.23
  5. Step 5: Solve for x
    x = 41,968.23/178.82
  6. Step 6: Final answer
    x = 234.70

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.