Finding the Fourth Proportional to 163.23, 244.70 and 86.19
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Solution
The fourth proportional to 163.23, 244.70 and 86.19 is: 129.21
Step by Step Solution
- Step 1: Write the proportion equation
163.23 : 244.70 = 86.19 : x - Step 2: Convert to fraction form
163.23/244.70 = 86.19/x - Step 3: Cross multiply
163.23x = 244.70 × 86.19 - Step 4: Simplify right side
163.23x = 21,090.26 - Step 5: Solve for x
x = 21,090.26/163.23 - Step 6: Final answer
x = 129.21
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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.