Finding the Fourth Proportional to 217.52, 300.16 and 122.99
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Solution
The fourth proportional to 217.52, 300.16 and 122.99 is: 169.72
Step by Step Solution
- Step 1: Write the proportion equation
217.52 : 300.16 = 122.99 : x - Step 2: Convert to fraction form
217.52/300.16 = 122.99/x - Step 3: Cross multiply
217.52x = 300.16 × 122.99 - Step 4: Simplify right side
217.52x = 36,916.68 - Step 5: Solve for x
x = 36,916.68/217.52 - Step 6: Final answer
x = 169.72
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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.