Finding the Fourth Proportional to 138.14, 207.26 and 92.58
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Solution
The fourth proportional to 138.14, 207.26 and 92.58 is: 138.90
Step by Step Solution
- Step 1: Write the proportion equation
138.14 : 207.26 = 92.58 : x - Step 2: Convert to fraction form
138.14/207.26 = 92.58/x - Step 3: Cross multiply
138.14x = 207.26 × 92.58 - Step 4: Simplify right side
138.14x = 19,187.24 - Step 5: Solve for x
x = 19,187.24/138.14 - Step 6: Final answer
x = 138.90
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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.