Finding the Fourth Proportional to 138.29, 207.18 and 94.88
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Solution
The fourth proportional to 138.29, 207.18 and 94.88 is: 142.15
Step by Step Solution
- Step 1: Write the proportion equation
138.29 : 207.18 = 94.88 : x - Step 2: Convert to fraction form
138.29/207.18 = 94.88/x - Step 3: Cross multiply
138.29x = 207.18 × 94.88 - Step 4: Simplify right side
138.29x = 19,657.24 - Step 5: Solve for x
x = 19,657.24/138.29 - Step 6: Final answer
x = 142.15
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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.