Finding the Fourth Proportional to 217.26, 299.91 and 170.76
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Solution
The fourth proportional to 217.26, 299.91 and 170.76 is: 235.72
Step by Step Solution
- Step 1: Write the proportion equation
217.26 : 299.91 = 170.76 : x - Step 2: Convert to fraction form
217.26/299.91 = 170.76/x - Step 3: Cross multiply
217.26x = 299.91 × 170.76 - Step 4: Simplify right side
217.26x = 51,212.63 - Step 5: Solve for x
x = 51,212.63/217.26 - Step 6: Final answer
x = 235.72
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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.