Finding the Fourth Proportional to 1,352.81, 2,028.87 and 612
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Solution
The fourth proportional to 1,352.81, 2,028.87 and 612 is: 917.84
Step by Step Solution
- Step 1: Write the proportion equation
1,352.81 : 2,028.87 = 612 : x - Step 2: Convert to fraction form
1,352.81/2,028.87 = 612/x - Step 3: Cross multiply
1,352.81x = 2,028.87 × 612 - Step 4: Simplify right side
1,352.81x = 1,241,668.44 - Step 5: Solve for x
x = 1,241,668.44/1,352.81 - Step 6: Final answer
x = 917.84
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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.