Finding the Fourth Proportional to 187.44, 281.63 and 118.99
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Solution
The fourth proportional to 187.44, 281.63 and 118.99 is: 178.78
Step by Step Solution
- Step 1: Write the proportion equation
187.44 : 281.63 = 118.99 : x - Step 2: Convert to fraction form
187.44/281.63 = 118.99/x - Step 3: Cross multiply
187.44x = 281.63 × 118.99 - Step 4: Simplify right side
187.44x = 33,511.15 - Step 5: Solve for x
x = 33,511.15/187.44 - Step 6: Final answer
x = 178.78
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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.