Finding the Fourth Proportional to 57.99, 86.99 and 25.92
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Solution
The fourth proportional to 57.99, 86.99 and 25.92 is: 38.88
Step by Step Solution
- Step 1: Write the proportion equation
57.99 : 86.99 = 25.92 : x - Step 2: Convert to fraction form
57.99/86.99 = 25.92/x - Step 3: Cross multiply
57.99x = 86.99 × 25.92 - Step 4: Simplify right side
57.99x = 2,254.65 - Step 5: Solve for x
x = 2,254.65/57.99 - Step 6: Final answer
x = 38.88
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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.