Finding the Fourth Proportional to 235.44, 353.19 and 91.14
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Solution
The fourth proportional to 235.44, 353.19 and 91.14 is: 136.72
Step by Step Solution
- Step 1: Write the proportion equation
235.44 : 353.19 = 91.14 : x - Step 2: Convert to fraction form
235.44/353.19 = 91.14/x - Step 3: Cross multiply
235.44x = 353.19 × 91.14 - Step 4: Simplify right side
235.44x = 32,189.74 - Step 5: Solve for x
x = 32,189.74/235.44 - Step 6: Final answer
x = 136.72
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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.