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Finding the Fourth Proportional to 260.63, 391.09 and 116.35

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Solution

The fourth proportional to 260.63, 391.09 and 116.35 is: 174.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    260.63 : 391.09 = 116.35 : x
  2. Step 2: Convert to fraction form
    260.63/391.09 = 116.35/x
  3. Step 3: Cross multiply
    260.63x = 391.09 × 116.35
  4. Step 4: Simplify right side
    260.63x = 45,502.05
  5. Step 5: Solve for x
    x = 45,502.05/260.63
  6. Step 6: Final answer
    x = 174.59

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.