Finding the Fourth Proportional to 1,467.96, 2,202.36 and 428
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Solution
The fourth proportional to 1,467.96, 2,202.36 and 428 is: 642.12
Step by Step Solution
- Step 1: Write the proportion equation
1,467.96 : 2,202.36 = 428 : x - Step 2: Convert to fraction form
1,467.96/2,202.36 = 428/x - Step 3: Cross multiply
1,467.96x = 2,202.36 × 428 - Step 4: Simplify right side
1,467.96x = 942,610.08 - Step 5: Solve for x
x = 942,610.08/1,467.96 - Step 6: Final answer
x = 642.12
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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.