Finding the Fourth Proportional to 197.10, 272.08 and 131.70
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Solution
The fourth proportional to 197.10, 272.08 and 131.70 is: 181.80
Step by Step Solution
- Step 1: Write the proportion equation
197.10 : 272.08 = 131.70 : x - Step 2: Convert to fraction form
197.10/272.08 = 131.70/x - Step 3: Cross multiply
197.10x = 272.08 × 131.70 - Step 4: Simplify right side
197.10x = 35,832.94 - Step 5: Solve for x
x = 35,832.94/197.10 - Step 6: Final answer
x = 181.80
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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.