Finding the Fourth Proportional to 823, 1,135.74 and 449.99
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Solution
The fourth proportional to 823, 1,135.74 and 449.99 is: 620.99
Step by Step Solution
- Step 1: Write the proportion equation
823 : 1,135.74 = 449.99 : x - Step 2: Convert to fraction form
823/1,135.74 = 449.99/x - Step 3: Cross multiply
823x = 1,135.74 × 449.99 - Step 4: Simplify right side
823x = 511,071.64 - Step 5: Solve for x
x = 511,071.64/823 - Step 6: Final answer
x = 620.99
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.