Finding the Fourth Proportional to 217.23, 325.78 and 108.99
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Solution
The fourth proportional to 217.23, 325.78 and 108.99 is: 163.45
Step by Step Solution
- Step 1: Write the proportion equation
217.23 : 325.78 = 108.99 : x - Step 2: Convert to fraction form
217.23/325.78 = 108.99/x - Step 3: Cross multiply
217.23x = 325.78 × 108.99 - Step 4: Simplify right side
217.23x = 35,506.76 - Step 5: Solve for x
x = 35,506.76/217.23 - Step 6: Final answer
x = 163.45
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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.