Finding the Fourth Proportional to 772, 1,158 and 309.99
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Solution
The fourth proportional to 772, 1,158 and 309.99 is: 464.99
Step by Step Solution
- Step 1: Write the proportion equation
772 : 1,158 = 309.99 : x - Step 2: Convert to fraction form
772/1,158 = 309.99/x - Step 3: Cross multiply
772x = 1,158 × 309.99 - Step 4: Simplify right side
772x = 358,968.42 - Step 5: Solve for x
x = 358,968.42/772 - Step 6: Final answer
x = 464.99
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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.