Finding the Fourth Proportional to 163.29, 225.26 and 138.99
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Solution
The fourth proportional to 163.29, 225.26 and 138.99 is: 191.74
Step by Step Solution
- Step 1: Write the proportion equation
163.29 : 225.26 = 138.99 : x - Step 2: Convert to fraction form
163.29/225.26 = 138.99/x - Step 3: Cross multiply
163.29x = 225.26 × 138.99 - Step 4: Simplify right side
163.29x = 31,309.56 - Step 5: Solve for x
x = 31,309.56/163.29 - Step 6: Final answer
x = 191.74
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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.