Finding the Fourth Proportional to 1,040, 1,435.20 and 626.08
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Solution
The fourth proportional to 1,040, 1,435.20 and 626.08 is: 863.99
Step by Step Solution
- Step 1: Write the proportion equation
1,040 : 1,435.20 = 626.08 : x - Step 2: Convert to fraction form
1,040/1,435.20 = 626.08/x - Step 3: Cross multiply
1,040x = 1,435.20 × 626.08 - Step 4: Simplify right side
1,040x = 898,550.02 - Step 5: Solve for x
x = 898,550.02/1,040 - Step 6: Final answer
x = 863.99
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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.