Finding the Fourth Proportional to 197.61, 272.70 and 119.99
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Solution
The fourth proportional to 197.61, 272.70 and 119.99 is: 165.58
Step by Step Solution
- Step 1: Write the proportion equation
197.61 : 272.70 = 119.99 : x - Step 2: Convert to fraction form
197.61/272.70 = 119.99/x - Step 3: Cross multiply
197.61x = 272.70 × 119.99 - Step 4: Simplify right side
197.61x = 32,719.91 - Step 5: Solve for x
x = 32,719.91/197.61 - Step 6: Final answer
x = 165.58
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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.