Finding the Fourth Proportional to 811.21, 1,114.08 and 679.99
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Solution
The fourth proportional to 811.21, 1,114.08 and 679.99 is: 933.87
Step by Step Solution
- Step 1: Write the proportion equation
811.21 : 1,114.08 = 679.99 : x - Step 2: Convert to fraction form
811.21/1,114.08 = 679.99/x - Step 3: Cross multiply
811.21x = 1,114.08 × 679.99 - Step 4: Simplify right side
811.21x = 757,563.26 - Step 5: Solve for x
x = 757,563.26/811.21 - Step 6: Final answer
x = 933.87
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Why These Related Problems?
These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.