Finding the Fourth Proportional to 292.44, 438.68 and 84.21
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Solution
The fourth proportional to 292.44, 438.68 and 84.21 is: 126.32
Step by Step Solution
- Step 1: Write the proportion equation
292.44 : 438.68 = 84.21 : x - Step 2: Convert to fraction form
292.44/438.68 = 84.21/x - Step 3: Cross multiply
292.44x = 438.68 × 84.21 - Step 4: Simplify right side
292.44x = 36,941.30 - Step 5: Solve for x
x = 36,941.30/292.44 - Step 6: Final answer
x = 126.32
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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.