Finding the Fourth Proportional to 121.44, 182.11 and 84.95
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Solution
The fourth proportional to 121.44, 182.11 and 84.95 is: 127.39
Step by Step Solution
- Step 1: Write the proportion equation
121.44 : 182.11 = 84.95 : x - Step 2: Convert to fraction form
121.44/182.11 = 84.95/x - Step 3: Cross multiply
121.44x = 182.11 × 84.95 - Step 4: Simplify right side
121.44x = 15,470.24 - Step 5: Solve for x
x = 15,470.24/121.44 - Step 6: Final answer
x = 127.39
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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.