Finding the Fourth Proportional to 1,251.69, 1,877.84 and 386
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Solution
The fourth proportional to 1,251.69, 1,877.84 and 386 is: 579.09
Step by Step Solution
- Step 1: Write the proportion equation
1,251.69 : 1,877.84 = 386 : x - Step 2: Convert to fraction form
1,251.69/1,877.84 = 386/x - Step 3: Cross multiply
1,251.69x = 1,877.84 × 386 - Step 4: Simplify right side
1,251.69x = 724,846.24 - Step 5: Solve for x
x = 724,846.24/1,251.69 - Step 6: Final answer
x = 579.09
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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.