Finding the Fourth Proportional to 155.76, 233.48 and 129.92
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Solution
The fourth proportional to 155.76, 233.48 and 129.92 is: 194.75
Step by Step Solution
- Step 1: Write the proportion equation
155.76 : 233.48 = 129.92 : x - Step 2: Convert to fraction form
155.76/233.48 = 129.92/x - Step 3: Cross multiply
155.76x = 233.48 × 129.92 - Step 4: Simplify right side
155.76x = 30,333.72 - Step 5: Solve for x
x = 30,333.72/155.76 - Step 6: Final answer
x = 194.75
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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.