Finding the Fourth Proportional to 195.26, 269.26 and 129.78
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Solution
The fourth proportional to 195.26, 269.26 and 129.78 is: 178.97
Step by Step Solution
- Step 1: Write the proportion equation
195.26 : 269.26 = 129.78 : x - Step 2: Convert to fraction form
195.26/269.26 = 129.78/x - Step 3: Cross multiply
195.26x = 269.26 × 129.78 - Step 4: Simplify right side
195.26x = 34,944.24 - Step 5: Solve for x
x = 34,944.24/195.26 - Step 6: Final answer
x = 178.97
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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.