Finding the Fourth Proportional to 235.12, 324.36 and 157.44
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Solution
The fourth proportional to 235.12, 324.36 and 157.44 is: 217.20
Step by Step Solution
- Step 1: Write the proportion equation
235.12 : 324.36 = 157.44 : x - Step 2: Convert to fraction form
235.12/324.36 = 157.44/x - Step 3: Cross multiply
235.12x = 324.36 × 157.44 - Step 4: Simplify right side
235.12x = 51,067.24 - Step 5: Solve for x
x = 51,067.24/235.12 - Step 6: Final answer
x = 217.20
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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.