Finding the Fourth Proportional to 92.82, 139.16 and 38.68
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Solution
The fourth proportional to 92.82, 139.16 and 38.68 is: 57.99
Step by Step Solution
- Step 1: Write the proportion equation
92.82 : 139.16 = 38.68 : x - Step 2: Convert to fraction form
92.82/139.16 = 38.68/x - Step 3: Cross multiply
92.82x = 139.16 × 38.68 - Step 4: Simplify right side
92.82x = 5,382.71 - Step 5: Solve for x
x = 5,382.71/92.82 - Step 6: Final answer
x = 57.99
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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.