Finding the Fourth Proportional to 157.44, 236.19 and 121.62
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Solution
The fourth proportional to 157.44, 236.19 and 121.62 is: 182.45
Step by Step Solution
- Step 1: Write the proportion equation
157.44 : 236.19 = 121.62 : x - Step 2: Convert to fraction form
157.44/236.19 = 121.62/x - Step 3: Cross multiply
157.44x = 236.19 × 121.62 - Step 4: Simplify right side
157.44x = 28,725.43 - Step 5: Solve for x
x = 28,725.43/157.44 - Step 6: Final answer
x = 182.45
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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.