Finding the Fourth Proportional to 163.31, 225.20 and 145.99
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Solution
The fourth proportional to 163.31, 225.20 and 145.99 is: 201.32
Step by Step Solution
- Step 1: Write the proportion equation
163.31 : 225.20 = 145.99 : x - Step 2: Convert to fraction form
163.31/225.20 = 145.99/x - Step 3: Cross multiply
163.31x = 225.20 × 145.99 - Step 4: Simplify right side
163.31x = 32,877.05 - Step 5: Solve for x
x = 32,877.05/163.31 - Step 6: Final answer
x = 201.32
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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.