Finding the Fourth Proportional to 197.16, 272.05 and 141.99
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Solution
The fourth proportional to 197.16, 272.05 and 141.99 is: 195.92
Step by Step Solution
- Step 1: Write the proportion equation
197.16 : 272.05 = 141.99 : x - Step 2: Convert to fraction form
197.16/272.05 = 141.99/x - Step 3: Cross multiply
197.16x = 272.05 × 141.99 - Step 4: Simplify right side
197.16x = 38,628.38 - Step 5: Solve for x
x = 38,628.38/197.16 - Step 6: Final answer
x = 195.92
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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.