Finding the Fourth Proportional to 1,220.06, 1,683.69 and 696.09
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Solution
The fourth proportional to 1,220.06, 1,683.69 and 696.09 is: 960.61
Step by Step Solution
- Step 1: Write the proportion equation
1,220.06 : 1,683.69 = 696.09 : x - Step 2: Convert to fraction form
1,220.06/1,683.69 = 696.09/x - Step 3: Cross multiply
1,220.06x = 1,683.69 × 696.09 - Step 4: Simplify right side
1,220.06x = 1,172,003.48 - Step 5: Solve for x
x = 1,172,003.48/1,220.06 - Step 6: Final answer
x = 960.61
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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.