Finding the Fourth Proportional to 1,434.54, 2,151.93 and 664.62
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Solution
The fourth proportional to 1,434.54, 2,151.93 and 664.62 is: 996.99
Step by Step Solution
- Step 1: Write the proportion equation
1,434.54 : 2,151.93 = 664.62 : x - Step 2: Convert to fraction form
1,434.54/2,151.93 = 664.62/x - Step 3: Cross multiply
1,434.54x = 2,151.93 × 664.62 - Step 4: Simplify right side
1,434.54x = 1,430,215.72 - Step 5: Solve for x
x = 1,430,215.72/1,434.54 - Step 6: Final answer
x = 996.99
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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.