Finding the Fourth Proportional to 188.14, 281.91 and 119.68
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Solution
The fourth proportional to 188.14, 281.91 and 119.68 is: 179.33
Step by Step Solution
- Step 1: Write the proportion equation
188.14 : 281.91 = 119.68 : x - Step 2: Convert to fraction form
188.14/281.91 = 119.68/x - Step 3: Cross multiply
188.14x = 281.91 × 119.68 - Step 4: Simplify right side
188.14x = 33,738.99 - Step 5: Solve for x
x = 33,738.99/188.14 - Step 6: Final answer
x = 179.33
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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.