Finding the Fourth Proportional to 1,405.50, 2,108.73 and 626.05
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Solution
The fourth proportional to 1,405.50, 2,108.73 and 626.05 is: 939.29
Step by Step Solution
- Step 1: Write the proportion equation
1,405.50 : 2,108.73 = 626.05 : x - Step 2: Convert to fraction form
1,405.50/2,108.73 = 626.05/x - Step 3: Cross multiply
1,405.50x = 2,108.73 × 626.05 - Step 4: Simplify right side
1,405.50x = 1,320,175.40 - Step 5: Solve for x
x = 1,320,175.40/1,405.50 - Step 6: Final answer
x = 939.29
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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.