Finding the Fourth Proportional to 396.92, 595.17 and 221.28
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Solution
The fourth proportional to 396.92, 595.17 and 221.28 is: 331.80
Step by Step Solution
- Step 1: Write the proportion equation
396.92 : 595.17 = 221.28 : x - Step 2: Convert to fraction form
396.92/595.17 = 221.28/x - Step 3: Cross multiply
396.92x = 595.17 × 221.28 - Step 4: Simplify right side
396.92x = 131,696.99 - Step 5: Solve for x
x = 131,696.99/396.92 - Step 6: Final answer
x = 331.80
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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.