Finding the Fourth Proportional to 166.12, 249.21 and 84.92
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Solution
The fourth proportional to 166.12, 249.21 and 84.92 is: 127.39
Step by Step Solution
- Step 1: Write the proportion equation
166.12 : 249.21 = 84.92 : x - Step 2: Convert to fraction form
166.12/249.21 = 84.92/x - Step 3: Cross multiply
166.12x = 249.21 × 84.92 - Step 4: Simplify right side
166.12x = 21,161.67 - Step 5: Solve for x
x = 21,161.67/166.12 - 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.