Finding the Fourth Proportional to 138.46, 207.96 and 122.26
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Solution
The fourth proportional to 138.46, 207.96 and 122.26 is: 183.63
Step by Step Solution
- Step 1: Write the proportion equation
138.46 : 207.96 = 122.26 : x - Step 2: Convert to fraction form
138.46/207.96 = 122.26/x - Step 3: Cross multiply
138.46x = 207.96 × 122.26 - Step 4: Simplify right side
138.46x = 25,425.19 - Step 5: Solve for x
x = 25,425.19/138.46 - Step 6: Final answer
x = 183.63
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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.