Finding the Fourth Proportional to 397.13, 548.02 and 220.08
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Solution
The fourth proportional to 397.13, 548.02 and 220.08 is: 303.70
Step by Step Solution
- Step 1: Write the proportion equation
397.13 : 548.02 = 220.08 : x - Step 2: Convert to fraction form
397.13/548.02 = 220.08/x - Step 3: Cross multiply
397.13x = 548.02 × 220.08 - Step 4: Simplify right side
397.13x = 120,608.24 - Step 5: Solve for x
x = 120,608.24/397.13 - Step 6: Final answer
x = 303.70
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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.