Finding the Fourth Proportional to 194.36, 268.21 and 115.69
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Solution
The fourth proportional to 194.36, 268.21 and 115.69 is: 159.65
Step by Step Solution
- Step 1: Write the proportion equation
194.36 : 268.21 = 115.69 : x - Step 2: Convert to fraction form
194.36/268.21 = 115.69/x - Step 3: Cross multiply
194.36x = 268.21 × 115.69 - Step 4: Simplify right side
194.36x = 31,029.21 - Step 5: Solve for x
x = 31,029.21/194.36 - Step 6: Final answer
x = 159.65
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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.