Finding the Fourth Proportional to 680.67, 1,020.38 and 247.50
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Solution
The fourth proportional to 680.67, 1,020.38 and 247.50 is: 371.02
Step by Step Solution
- Step 1: Write the proportion equation
680.67 : 1,020.38 = 247.50 : x - Step 2: Convert to fraction form
680.67/1,020.38 = 247.50/x - Step 3: Cross multiply
680.67x = 1,020.38 × 247.50 - Step 4: Simplify right side
680.67x = 252,542.81 - Step 5: Solve for x
x = 252,542.81/680.67 - Step 6: Final answer
x = 371.02
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.