Finding the Fourth Proportional to 1,147.76, 1,721.08 and 378
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Solution
The fourth proportional to 1,147.76, 1,721.08 and 378 is: 566.82
Step by Step Solution
- Step 1: Write the proportion equation
1,147.76 : 1,721.08 = 378 : x - Step 2: Convert to fraction form
1,147.76/1,721.08 = 378/x - Step 3: Cross multiply
1,147.76x = 1,721.08 × 378 - Step 4: Simplify right side
1,147.76x = 650,568.24 - Step 5: Solve for x
x = 650,568.24/1,147.76 - Step 6: Final answer
x = 566.82
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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.