Finding the Fourth Proportional to 196.66, 271.41 and 113.75
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Solution
The fourth proportional to 196.66, 271.41 and 113.75 is: 156.99
Step by Step Solution
- Step 1: Write the proportion equation
196.66 : 271.41 = 113.75 : x - Step 2: Convert to fraction form
196.66/271.41 = 113.75/x - Step 3: Cross multiply
196.66x = 271.41 × 113.75 - Step 4: Simplify right side
196.66x = 30,873.55 - Step 5: Solve for x
x = 30,873.55/196.66 - Step 6: Final answer
x = 156.99
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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.