Finding the Fourth Proportional to 111.19, 166.79 and 63.09
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Solution
The fourth proportional to 111.19, 166.79 and 63.09 is: 94.64
Step by Step Solution
- Step 1: Write the proportion equation
111.19 : 166.79 = 63.09 : x - Step 2: Convert to fraction form
111.19/166.79 = 63.09/x - Step 3: Cross multiply
111.19x = 166.79 × 63.09 - Step 4: Simplify right side
111.19x = 10,522.78 - Step 5: Solve for x
x = 10,522.78/111.19 - Step 6: Final answer
x = 94.64
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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.