Finding the Fourth Proportional to 89.24, 133.86 and 57.08
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Solution
The fourth proportional to 89.24, 133.86 and 57.08 is: 85.62
Step by Step Solution
- Step 1: Write the proportion equation
89.24 : 133.86 = 57.08 : x - Step 2: Convert to fraction form
89.24/133.86 = 57.08/x - Step 3: Cross multiply
89.24x = 133.86 × 57.08 - Step 4: Simplify right side
89.24x = 7,640.73 - Step 5: Solve for x
x = 7,640.73/89.24 - Step 6: Final answer
x = 85.62
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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.