Finding the Fourth Proportional to 696.74, 1,045.11 and 257.99
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Solution
The fourth proportional to 696.74, 1,045.11 and 257.99 is: 386.99
Step by Step Solution
- Step 1: Write the proportion equation
696.74 : 1,045.11 = 257.99 : x - Step 2: Convert to fraction form
696.74/1,045.11 = 257.99/x - Step 3: Cross multiply
696.74x = 1,045.11 × 257.99 - Step 4: Simplify right side
696.74x = 269,627.93 - Step 5: Solve for x
x = 269,627.93/696.74 - Step 6: Final answer
x = 386.99
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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.