Finding the Fourth Proportional to 427.21, 642.26 and 337
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Solution
The fourth proportional to 427.21, 642.26 and 337 is: 506.64
Step by Step Solution
- Step 1: Write the proportion equation
427.21 : 642.26 = 337 : x - Step 2: Convert to fraction form
427.21/642.26 = 337/x - Step 3: Cross multiply
427.21x = 642.26 × 337 - Step 4: Simplify right side
427.21x = 216,441.62 - Step 5: Solve for x
x = 216,441.62/427.21 - Step 6: Final answer
x = 506.64
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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.