Finding the Fourth Proportional to 163.21, 224.99 and 107.85
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Solution
The fourth proportional to 163.21, 224.99 and 107.85 is: 148.67
Step by Step Solution
- Step 1: Write the proportion equation
163.21 : 224.99 = 107.85 : x - Step 2: Convert to fraction form
163.21/224.99 = 107.85/x - Step 3: Cross multiply
163.21x = 224.99 × 107.85 - Step 4: Simplify right side
163.21x = 24,264.94 - Step 5: Solve for x
x = 24,264.94/163.21 - Step 6: Final answer
x = 148.67
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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.