Finding the Fourth Proportional to 1,640.18, 2,460 and 453.94
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Solution
The fourth proportional to 1,640.18, 2,460 and 453.94 is: 680.84
Step by Step Solution
- Step 1: Write the proportion equation
1,640.18 : 2,460 = 453.94 : x - Step 2: Convert to fraction form
1,640.18/2,460 = 453.94/x - Step 3: Cross multiply
1,640.18x = 2,460 × 453.94 - Step 4: Simplify right side
1,640.18x = 1,116,692.40 - Step 5: Solve for x
x = 1,116,692.40/1,640.18 - Step 6: Final answer
x = 680.84
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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.