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Finding the Fourth Proportional to 178.23, 245.86 and 108.25

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Solution

The fourth proportional to 178.23, 245.86 and 108.25 is: 149.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    178.23 : 245.86 = 108.25 : x
  2. Step 2: Convert to fraction form
    178.23/245.86 = 108.25/x
  3. Step 3: Cross multiply
    178.23x = 245.86 × 108.25
  4. Step 4: Simplify right side
    178.23x = 26,614.35
  5. Step 5: Solve for x
    x = 26,614.35/178.23
  6. Step 6: Final answer
    x = 149.33

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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.