Finding the Fourth Proportional to 1,012.23, 1,402.74 and 992.79
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Solution
The fourth proportional to 1,012.23, 1,402.74 and 992.79 is: 1,375.80
Step by Step Solution
- Step 1: Write the proportion equation
1,012.23 : 1,402.74 = 992.79 : x - Step 2: Convert to fraction form
1,012.23/1,402.74 = 992.79/x - Step 3: Cross multiply
1,012.23x = 1,402.74 × 992.79 - Step 4: Simplify right side
1,012.23x = 1,392,626.24 - Step 5: Solve for x
x = 1,392,626.24/1,012.23 - Step 6: Final answer
x = 1,375.80
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Why These Related Problems?
These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.