Finding the Fourth Proportional to 157.62, 236.32 and 84.49
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Solution
The fourth proportional to 157.62, 236.32 and 84.49 is: 126.68
Step by Step Solution
- Step 1: Write the proportion equation
157.62 : 236.32 = 84.49 : x - Step 2: Convert to fraction form
157.62/236.32 = 84.49/x - Step 3: Cross multiply
157.62x = 236.32 × 84.49 - Step 4: Simplify right side
157.62x = 19,966.68 - Step 5: Solve for x
x = 19,966.68/157.62 - Step 6: Final answer
x = 126.68
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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.