Finding the Fourth Proportional to 195.14, 269.28 and 129.70
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Solution
The fourth proportional to 195.14, 269.28 and 129.70 is: 178.98
Step by Step Solution
- Step 1: Write the proportion equation
195.14 : 269.28 = 129.70 : x - Step 2: Convert to fraction form
195.14/269.28 = 129.70/x - Step 3: Cross multiply
195.14x = 269.28 × 129.70 - Step 4: Simplify right side
195.14x = 34,925.62 - Step 5: Solve for x
x = 34,925.62/195.14 - Step 6: Final answer
x = 178.98
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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.