Finding the Fourth Proportional to 195.70, 269.91 and 154.19
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Solution
The fourth proportional to 195.70, 269.91 and 154.19 is: 212.65
Step by Step Solution
- Step 1: Write the proportion equation
195.70 : 269.91 = 154.19 : x - Step 2: Convert to fraction form
195.70/269.91 = 154.19/x - Step 3: Cross multiply
195.70x = 269.91 × 154.19 - Step 4: Simplify right side
195.70x = 41,616.99 - Step 5: Solve for x
x = 41,616.99/195.70 - Step 6: Final answer
x = 212.65
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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.