Finding the Fourth Proportional to 187.62, 281.36 and 122.58
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Solution
The fourth proportional to 187.62, 281.36 and 122.58 is: 183.82
Step by Step Solution
- Step 1: Write the proportion equation
187.62 : 281.36 = 122.58 : x - Step 2: Convert to fraction form
187.62/281.36 = 122.58/x - Step 3: Cross multiply
187.62x = 281.36 × 122.58 - Step 4: Simplify right side
187.62x = 34,487.70 - Step 5: Solve for x
x = 34,487.70/187.62 - Step 6: Final answer
x = 183.82
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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.