Finding the Fourth Proportional to 113.19, 170.79 and 108.97
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Solution
The fourth proportional to 113.19, 170.79 and 108.97 is: 164.42
Step by Step Solution
- Step 1: Write the proportion equation
113.19 : 170.79 = 108.97 : x - Step 2: Convert to fraction form
113.19/170.79 = 108.97/x - Step 3: Cross multiply
113.19x = 170.79 × 108.97 - Step 4: Simplify right side
113.19x = 18,610.99 - Step 5: Solve for x
x = 18,610.99/113.19 - Step 6: Final answer
x = 164.42
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Why These Related Problems?
These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.