Finding the Fourth Proportional to 1,272.09, 1,754.49 and 852.31
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Solution
The fourth proportional to 1,272.09, 1,754.49 and 852.31 is: 1,175.52
Step by Step Solution
- Step 1: Write the proportion equation
1,272.09 : 1,754.49 = 852.31 : x - Step 2: Convert to fraction form
1,272.09/1,754.49 = 852.31/x - Step 3: Cross multiply
1,272.09x = 1,754.49 × 852.31 - Step 4: Simplify right side
1,272.09x = 1,495,369.37 - Step 5: Solve for x
x = 1,495,369.37/1,272.09 - Step 6: Final answer
x = 1,175.52
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.