Finding the Fourth Proportional to 194.12, 291.09 and 112.99
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Solution
The fourth proportional to 194.12, 291.09 and 112.99 is: 169.43
Step by Step Solution
- Step 1: Write the proportion equation
194.12 : 291.09 = 112.99 : x - Step 2: Convert to fraction form
194.12/291.09 = 112.99/x - Step 3: Cross multiply
194.12x = 291.09 × 112.99 - Step 4: Simplify right side
194.12x = 32,888.80 - Step 5: Solve for x
x = 32,888.80/194.12 - Step 6: Final answer
x = 169.43
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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.