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Finding the Fourth Proportional to 178.26, 246.30 and 141.69

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Solution

The fourth proportional to 178.26, 246.30 and 141.69 is: 195.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    178.26 : 246.30 = 141.69 : x
  2. Step 2: Convert to fraction form
    178.26/246.30 = 141.69/x
  3. Step 3: Cross multiply
    178.26x = 246.30 × 141.69
  4. Step 4: Simplify right side
    178.26x = 34,898.25
  5. Step 5: Solve for x
    x = 34,898.25/178.26
  6. Step 6: Final answer
    x = 195.77

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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.