Finding the Fourth Proportional to 163.99, 225.78 and 131.19
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Solution
The fourth proportional to 163.99, 225.78 and 131.19 is: 180.62
Step by Step Solution
- Step 1: Write the proportion equation
163.99 : 225.78 = 131.19 : x - Step 2: Convert to fraction form
163.99/225.78 = 131.19/x - Step 3: Cross multiply
163.99x = 225.78 × 131.19 - Step 4: Simplify right side
163.99x = 29,620.08 - Step 5: Solve for x
x = 29,620.08/163.99 - Step 6: Final answer
x = 180.62
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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.