Finding the Fourth Proportional to 396.70, 546.77 and 272.14
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Solution
The fourth proportional to 396.70, 546.77 and 272.14 is: 375.09
Step by Step Solution
- Step 1: Write the proportion equation
396.70 : 546.77 = 272.14 : x - Step 2: Convert to fraction form
396.70/546.77 = 272.14/x - Step 3: Cross multiply
396.70x = 546.77 × 272.14 - Step 4: Simplify right side
396.70x = 148,797.99 - Step 5: Solve for x
x = 148,797.99/396.70 - Step 6: Final answer
x = 375.09
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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.