Finding the Fourth Proportional to 193.19, 289.37 and 84.65
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Solution
The fourth proportional to 193.19, 289.37 and 84.65 is: 126.79
Step by Step Solution
- Step 1: Write the proportion equation
193.19 : 289.37 = 84.65 : x - Step 2: Convert to fraction form
193.19/289.37 = 84.65/x - Step 3: Cross multiply
193.19x = 289.37 × 84.65 - Step 4: Simplify right side
193.19x = 24,493.94 - Step 5: Solve for x
x = 24,493.94/193.19 - Step 6: Final answer
x = 126.79
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.