Finding the Fourth Proportional to 1,392.24, 2,088 and 418.44
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Solution
The fourth proportional to 1,392.24, 2,088 and 418.44 is: 627.55
Step by Step Solution
- Step 1: Write the proportion equation
1,392.24 : 2,088 = 418.44 : x - Step 2: Convert to fraction form
1,392.24/2,088 = 418.44/x - Step 3: Cross multiply
1,392.24x = 2,088 × 418.44 - Step 4: Simplify right side
1,392.24x = 873,702.72 - Step 5: Solve for x
x = 873,702.72/1,392.24 - Step 6: Final answer
x = 627.55
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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.