Finding the Fourth Proportional to 168.08, 252.09 and 76.68
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Solution
The fourth proportional to 168.08, 252.09 and 76.68 is: 115.01
Step by Step Solution
- Step 1: Write the proportion equation
168.08 : 252.09 = 76.68 : x - Step 2: Convert to fraction form
168.08/252.09 = 76.68/x - Step 3: Cross multiply
168.08x = 252.09 × 76.68 - Step 4: Simplify right side
168.08x = 19,330.26 - Step 5: Solve for x
x = 19,330.26/168.08 - Step 6: Final answer
x = 115.01
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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.