Finding the Fourth Proportional to 396.44, 547.08 and 219.41
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Solution
The fourth proportional to 396.44, 547.08 and 219.41 is: 302.79
Step by Step Solution
- Step 1: Write the proportion equation
396.44 : 547.08 = 219.41 : x - Step 2: Convert to fraction form
396.44/547.08 = 219.41/x - Step 3: Cross multiply
396.44x = 547.08 × 219.41 - Step 4: Simplify right side
396.44x = 120,036.19 - Step 5: Solve for x
x = 120,036.19/396.44 - Step 6: Final answer
x = 302.79
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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.