Finding the Fourth Proportional to 259.44, 389.36 and 115.26
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Solution
The fourth proportional to 259.44, 389.36 and 115.26 is: 172.98
Step by Step Solution
- Step 1: Write the proportion equation
259.44 : 389.36 = 115.26 : x - Step 2: Convert to fraction form
259.44/389.36 = 115.26/x - Step 3: Cross multiply
259.44x = 389.36 × 115.26 - Step 4: Simplify right side
259.44x = 44,877.63 - Step 5: Solve for x
x = 44,877.63/259.44 - Step 6: Final answer
x = 172.98
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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.