Finding the Fourth Proportional to 759.92, 1,140 and 327.20
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Solution
The fourth proportional to 759.92, 1,140 and 327.20 is: 490.85
Step by Step Solution
- Step 1: Write the proportion equation
759.92 : 1,140 = 327.20 : x - Step 2: Convert to fraction form
759.92/1,140 = 327.20/x - Step 3: Cross multiply
759.92x = 1,140 × 327.20 - Step 4: Simplify right side
759.92x = 373,008 - Step 5: Solve for x
x = 373,008/759.92 - Step 6: Final answer
x = 490.85
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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.