Finding the Fourth Proportional to 116.29, 174.09 and 72.81
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Solution
The fourth proportional to 116.29, 174.09 and 72.81 is: 109.00
Step by Step Solution
- Step 1: Write the proportion equation
116.29 : 174.09 = 72.81 : x - Step 2: Convert to fraction form
116.29/174.09 = 72.81/x - Step 3: Cross multiply
116.29x = 174.09 × 72.81 - Step 4: Simplify right side
116.29x = 12,675.13 - Step 5: Solve for x
x = 12,675.13/116.29 - Step 6: Final answer
x = 109.00
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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.