Finding the Fourth Proportional to 163.14, 225.07 and 121.80
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Solution
The fourth proportional to 163.14, 225.07 and 121.80 is: 168.04
Step by Step Solution
- Step 1: Write the proportion equation
163.14 : 225.07 = 121.80 : x - Step 2: Convert to fraction form
163.14/225.07 = 121.80/x - Step 3: Cross multiply
163.14x = 225.07 × 121.80 - Step 4: Simplify right side
163.14x = 27,413.53 - Step 5: Solve for x
x = 27,413.53/163.14 - Step 6: Final answer
x = 168.04
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.