Finding the Fourth Proportional to 389.26, 537.19 and 214.60
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Solution
The fourth proportional to 389.26, 537.19 and 214.60 is: 296.15
Step by Step Solution
- Step 1: Write the proportion equation
389.26 : 537.19 = 214.60 : x - Step 2: Convert to fraction form
389.26/537.19 = 214.60/x - Step 3: Cross multiply
389.26x = 537.19 × 214.60 - Step 4: Simplify right side
389.26x = 115,280.97 - Step 5: Solve for x
x = 115,280.97/389.26 - Step 6: Final answer
x = 296.15
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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.