Finding the Fourth Proportional to 163.72, 245.60 and 53.99
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Solution
The fourth proportional to 163.72, 245.60 and 53.99 is: 80.99
Step by Step Solution
- Step 1: Write the proportion equation
163.72 : 245.60 = 53.99 : x - Step 2: Convert to fraction form
163.72/245.60 = 53.99/x - Step 3: Cross multiply
163.72x = 245.60 × 53.99 - Step 4: Simplify right side
163.72x = 13,259.94 - Step 5: Solve for x
x = 13,259.94/163.72 - Step 6: Final answer
x = 80.99
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.