Finding the Fourth Proportional to 397.70, 548.74 and 267.09
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Solution
The fourth proportional to 397.70, 548.74 and 267.09 is: 368.53
Step by Step Solution
- Step 1: Write the proportion equation
397.70 : 548.74 = 267.09 : x - Step 2: Convert to fraction form
397.70/548.74 = 267.09/x - Step 3: Cross multiply
397.70x = 548.74 × 267.09 - Step 4: Simplify right side
397.70x = 146,562.97 - Step 5: Solve for x
x = 146,562.97/397.70 - Step 6: Final answer
x = 368.53
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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.