Finding the Fourth Proportional to 991.96, 1,368.97 and 549.99
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Solution
The fourth proportional to 991.96, 1,368.97 and 549.99 is: 759.02
Step by Step Solution
- Step 1: Write the proportion equation
991.96 : 1,368.97 = 549.99 : x - Step 2: Convert to fraction form
991.96/1,368.97 = 549.99/x - Step 3: Cross multiply
991.96x = 1,368.97 × 549.99 - Step 4: Simplify right side
991.96x = 752,918.44 - Step 5: Solve for x
x = 752,918.44/991.96 - Step 6: Final answer
x = 759.02
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.