Finding the Fourth Proportional to 194.70, 292.11 and 79.18
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Solution
The fourth proportional to 194.70, 292.11 and 79.18 is: 118.79
Step by Step Solution
- Step 1: Write the proportion equation
194.70 : 292.11 = 79.18 : x - Step 2: Convert to fraction form
194.70/292.11 = 79.18/x - Step 3: Cross multiply
194.70x = 292.11 × 79.18 - Step 4: Simplify right side
194.70x = 23,128.24 - Step 5: Solve for x
x = 23,128.24/194.70 - Step 6: Final answer
x = 118.79
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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.