Finding the Fourth Proportional to 1,253.70, 1,880.53 and 388
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Solution
The fourth proportional to 1,253.70, 1,880.53 and 388 is: 581.99
Step by Step Solution
- Step 1: Write the proportion equation
1,253.70 : 1,880.53 = 388 : x - Step 2: Convert to fraction form
1,253.70/1,880.53 = 388/x - Step 3: Cross multiply
1,253.70x = 1,880.53 × 388 - Step 4: Simplify right side
1,253.70x = 729,645.64 - Step 5: Solve for x
x = 729,645.64/1,253.70 - Step 6: Final answer
x = 581.99
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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.