Finding the Fourth Proportional to 235.36, 324.96 and 157.96
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Solution
The fourth proportional to 235.36, 324.96 and 157.96 is: 218.09
Step by Step Solution
- Step 1: Write the proportion equation
235.36 : 324.96 = 157.96 : x - Step 2: Convert to fraction form
235.36/324.96 = 157.96/x - Step 3: Cross multiply
235.36x = 324.96 × 157.96 - Step 4: Simplify right side
235.36x = 51,330.68 - Step 5: Solve for x
x = 51,330.68/235.36 - Step 6: Final answer
x = 218.09
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.