Finding the Fourth Proportional to 197.71, 272.87 and 117.99
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Solution
The fourth proportional to 197.71, 272.87 and 117.99 is: 162.85
Step by Step Solution
- Step 1: Write the proportion equation
197.71 : 272.87 = 117.99 : x - Step 2: Convert to fraction form
197.71/272.87 = 117.99/x - Step 3: Cross multiply
197.71x = 272.87 × 117.99 - Step 4: Simplify right side
197.71x = 32,195.78 - Step 5: Solve for x
x = 32,195.78/197.71 - Step 6: Final answer
x = 162.85
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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.