Finding the Fourth Proportional to 141.44, 194.94 and 97.70
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Solution
The fourth proportional to 141.44, 194.94 and 97.70 is: 134.66
Step by Step Solution
- Step 1: Write the proportion equation
141.44 : 194.94 = 97.70 : x - Step 2: Convert to fraction form
141.44/194.94 = 97.70/x - Step 3: Cross multiply
141.44x = 194.94 × 97.70 - Step 4: Simplify right side
141.44x = 19,045.64 - Step 5: Solve for x
x = 19,045.64/141.44 - Step 6: Final answer
x = 134.66
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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.