Finding the Fourth Proportional to 810.93, 1,119.11 and 456.99
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Solution
The fourth proportional to 810.93, 1,119.11 and 456.99 is: 630.66
Step by Step Solution
- Step 1: Write the proportion equation
810.93 : 1,119.11 = 456.99 : x - Step 2: Convert to fraction form
810.93/1,119.11 = 456.99/x - Step 3: Cross multiply
810.93x = 1,119.11 × 456.99 - Step 4: Simplify right side
810.93x = 511,418.14 - Step 5: Solve for x
x = 511,418.14/810.93 - Step 6: Final answer
x = 630.66
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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.