Finding the Fourth Proportional to 259.97, 389.91 and 157.88
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Solution
The fourth proportional to 259.97, 389.91 and 157.88 is: 236.79
Step by Step Solution
- Step 1: Write the proportion equation
259.97 : 389.91 = 157.88 : x - Step 2: Convert to fraction form
259.97/389.91 = 157.88/x - Step 3: Cross multiply
259.97x = 389.91 × 157.88 - Step 4: Simplify right side
259.97x = 61,558.99 - Step 5: Solve for x
x = 61,558.99/259.97 - Step 6: Final answer
x = 236.79
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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.