Finding the Fourth Proportional to 113.93, 170.81 and 52.99
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Solution
The fourth proportional to 113.93, 170.81 and 52.99 is: 79.45
Step by Step Solution
- Step 1: Write the proportion equation
113.93 : 170.81 = 52.99 : x - Step 2: Convert to fraction form
113.93/170.81 = 52.99/x - Step 3: Cross multiply
113.93x = 170.81 × 52.99 - Step 4: Simplify right side
113.93x = 9,051.22 - Step 5: Solve for x
x = 9,051.22/113.93 - Step 6: Final answer
x = 79.45
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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.