Finding the Fourth Proportional to 286.13, 428.99 and 112.66
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Solution
The fourth proportional to 286.13, 428.99 and 112.66 is: 168.90
Step by Step Solution
- Step 1: Write the proportion equation
286.13 : 428.99 = 112.66 : x - Step 2: Convert to fraction form
286.13/428.99 = 112.66/x - Step 3: Cross multiply
286.13x = 428.99 × 112.66 - Step 4: Simplify right side
286.13x = 48,328.38 - Step 5: Solve for x
x = 48,328.38/286.13 - Step 6: Final answer
x = 168.90
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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.