Finding the Fourth Proportional to 195.63, 269.97 and 121.99
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Solution
The fourth proportional to 195.63, 269.97 and 121.99 is: 168.35
Step by Step Solution
- Step 1: Write the proportion equation
195.63 : 269.97 = 121.99 : x - Step 2: Convert to fraction form
195.63/269.97 = 121.99/x - Step 3: Cross multiply
195.63x = 269.97 × 121.99 - Step 4: Simplify right side
195.63x = 32,933.01 - Step 5: Solve for x
x = 32,933.01/195.63 - Step 6: Final answer
x = 168.35
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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.