Finding the Fourth Proportional to 196.97, 271.88 and 122.31
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Solution
The fourth proportional to 196.97, 271.88 and 122.31 is: 168.83
Step by Step Solution
- Step 1: Write the proportion equation
196.97 : 271.88 = 122.31 : x - Step 2: Convert to fraction form
196.97/271.88 = 122.31/x - Step 3: Cross multiply
196.97x = 271.88 × 122.31 - Step 4: Simplify right side
196.97x = 33,253.03 - Step 5: Solve for x
x = 33,253.03/196.97 - Step 6: Final answer
x = 168.83
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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.