Finding the Fourth Proportional to 163.74, 245.19 and 139.44
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Solution
The fourth proportional to 163.74, 245.19 and 139.44 is: 208.80
Step by Step Solution
- Step 1: Write the proportion equation
163.74 : 245.19 = 139.44 : x - Step 2: Convert to fraction form
163.74/245.19 = 139.44/x - Step 3: Cross multiply
163.74x = 245.19 × 139.44 - Step 4: Simplify right side
163.74x = 34,189.29 - Step 5: Solve for x
x = 34,189.29/163.74 - Step 6: Final answer
x = 208.80
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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.