Finding the Fourth Proportional to 163.68, 245.35 and 76.94
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Solution
The fourth proportional to 163.68, 245.35 and 76.94 is: 115.33
Step by Step Solution
- Step 1: Write the proportion equation
163.68 : 245.35 = 76.94 : x - Step 2: Convert to fraction form
163.68/245.35 = 76.94/x - Step 3: Cross multiply
163.68x = 245.35 × 76.94 - Step 4: Simplify right side
163.68x = 18,877.65 - Step 5: Solve for x
x = 18,877.65/163.68 - Step 6: Final answer
x = 115.33
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.