Finding the Fourth Proportional to 217.14, 324.99 and 154.28
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Solution
The fourth proportional to 217.14, 324.99 and 154.28 is: 230.90
Step by Step Solution
- Step 1: Write the proportion equation
217.14 : 324.99 = 154.28 : x - Step 2: Convert to fraction form
217.14/324.99 = 154.28/x - Step 3: Cross multiply
217.14x = 324.99 × 154.28 - Step 4: Simplify right side
217.14x = 50,138.69 - Step 5: Solve for x
x = 50,138.69/217.14 - Step 6: Final answer
x = 230.90
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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.