Finding the Fourth Proportional to 163.18, 225.31 and 107.99
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Solution
The fourth proportional to 163.18, 225.31 and 107.99 is: 149.11
Step by Step Solution
- Step 1: Write the proportion equation
163.18 : 225.31 = 107.99 : x - Step 2: Convert to fraction form
163.18/225.31 = 107.99/x - Step 3: Cross multiply
163.18x = 225.31 × 107.99 - Step 4: Simplify right side
163.18x = 24,331.93 - Step 5: Solve for x
x = 24,331.93/163.18 - Step 6: Final answer
x = 149.11
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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.