Finding the Fourth Proportional to 213.36, 319.76 and 154.99
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Solution
The fourth proportional to 213.36, 319.76 and 154.99 is: 232.28
Step by Step Solution
- Step 1: Write the proportion equation
213.36 : 319.76 = 154.99 : x - Step 2: Convert to fraction form
213.36/319.76 = 154.99/x - Step 3: Cross multiply
213.36x = 319.76 × 154.99 - Step 4: Simplify right side
213.36x = 49,559.60 - Step 5: Solve for x
x = 49,559.60/213.36 - Step 6: Final answer
x = 232.28
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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.