Finding the Fourth Proportional to 548.24, 821.44 and 385.63
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Solution
The fourth proportional to 548.24, 821.44 and 385.63 is: 577.80
Step by Step Solution
- Step 1: Write the proportion equation
548.24 : 821.44 = 385.63 : x - Step 2: Convert to fraction form
548.24/821.44 = 385.63/x - Step 3: Cross multiply
548.24x = 821.44 × 385.63 - Step 4: Simplify right side
548.24x = 316,771.91 - Step 5: Solve for x
x = 316,771.91/548.24 - Step 6: Final answer
x = 577.80
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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.