Finding the Fourth Proportional to 104.97, 157.19 and 87.81
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Solution
The fourth proportional to 104.97, 157.19 and 87.81 is: 131.49
Step by Step Solution
- Step 1: Write the proportion equation
104.97 : 157.19 = 87.81 : x - Step 2: Convert to fraction form
104.97/157.19 = 87.81/x - Step 3: Cross multiply
104.97x = 157.19 × 87.81 - Step 4: Simplify right side
104.97x = 13,802.24 - Step 5: Solve for x
x = 13,802.24/104.97 - Step 6: Final answer
x = 131.49
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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.