Finding the Fourth Proportional to 166.11, 248.97 and 84.78
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Solution
The fourth proportional to 166.11, 248.97 and 84.78 is: 127.07
Step by Step Solution
- Step 1: Write the proportion equation
166.11 : 248.97 = 84.78 : x - Step 2: Convert to fraction form
166.11/248.97 = 84.78/x - Step 3: Cross multiply
166.11x = 248.97 × 84.78 - Step 4: Simplify right side
166.11x = 21,107.68 - Step 5: Solve for x
x = 21,107.68/166.11 - Step 6: Final answer
x = 127.07
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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.