Finding the Fourth Proportional to 163.70, 225.42 and 140.21
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Solution
The fourth proportional to 163.70, 225.42 and 140.21 is: 193.07
Step by Step Solution
- Step 1: Write the proportion equation
163.70 : 225.42 = 140.21 : x - Step 2: Convert to fraction form
163.70/225.42 = 140.21/x - Step 3: Cross multiply
163.70x = 225.42 × 140.21 - Step 4: Simplify right side
163.70x = 31,606.14 - Step 5: Solve for x
x = 31,606.14/163.70 - Step 6: Final answer
x = 193.07
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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.