Finding the Fourth Proportional to 163.14, 224.74 and 139.75
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Solution
The fourth proportional to 163.14, 224.74 and 139.75 is: 192.52
Step by Step Solution
- Step 1: Write the proportion equation
163.14 : 224.74 = 139.75 : x - Step 2: Convert to fraction form
163.14/224.74 = 139.75/x - Step 3: Cross multiply
163.14x = 224.74 × 139.75 - Step 4: Simplify right side
163.14x = 31,407.87 - Step 5: Solve for x
x = 31,407.87/163.14 - Step 6: Final answer
x = 192.52
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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.