Finding the Fourth Proportional to 197.44, 272.26 and 155.90
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Solution
The fourth proportional to 197.44, 272.26 and 155.90 is: 214.99
Step by Step Solution
- Step 1: Write the proportion equation
197.44 : 272.26 = 155.90 : x - Step 2: Convert to fraction form
197.44/272.26 = 155.90/x - Step 3: Cross multiply
197.44x = 272.26 × 155.90 - Step 4: Simplify right side
197.44x = 42,446.21 - Step 5: Solve for x
x = 42,446.21/197.44 - Step 6: Final answer
x = 214.99
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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.