Finding the Fourth Proportional to 396.36, 547.14 and 388.26
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Solution
The fourth proportional to 396.36, 547.14 and 388.26 is: 535.96
Step by Step Solution
- Step 1: Write the proportion equation
396.36 : 547.14 = 388.26 : x - Step 2: Convert to fraction form
396.36/547.14 = 388.26/x - Step 3: Cross multiply
396.36x = 547.14 × 388.26 - Step 4: Simplify right side
396.36x = 212,432.58 - Step 5: Solve for x
x = 212,432.58/396.36 - Step 6: Final answer
x = 535.96
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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.