Finding the Fourth Proportional to 361.99, 542.99 and 115.21
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Solution
The fourth proportional to 361.99, 542.99 and 115.21 is: 172.82
Step by Step Solution
- Step 1: Write the proportion equation
361.99 : 542.99 = 115.21 : x - Step 2: Convert to fraction form
361.99/542.99 = 115.21/x - Step 3: Cross multiply
361.99x = 542.99 × 115.21 - Step 4: Simplify right side
361.99x = 62,557.88 - Step 5: Solve for x
x = 62,557.88/361.99 - Step 6: Final answer
x = 172.82
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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.