Finding the Fourth Proportional to 328.13, 492.26 and 135.75
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Solution
The fourth proportional to 328.13, 492.26 and 135.75 is: 203.65
Step by Step Solution
- Step 1: Write the proportion equation
328.13 : 492.26 = 135.75 : x - Step 2: Convert to fraction form
328.13/492.26 = 135.75/x - Step 3: Cross multiply
328.13x = 492.26 × 135.75 - Step 4: Simplify right side
328.13x = 66,823.62 - Step 5: Solve for x
x = 66,823.62/328.13 - Step 6: Final answer
x = 203.65
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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.