Finding the Fourth Proportional to 132.70, 198.91 and 55.70
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Solution
The fourth proportional to 132.70, 198.91 and 55.70 is: 83.49
Step by Step Solution
- Step 1: Write the proportion equation
132.70 : 198.91 = 55.70 : x - Step 2: Convert to fraction form
132.70/198.91 = 55.70/x - Step 3: Cross multiply
132.70x = 198.91 × 55.70 - Step 4: Simplify right side
132.70x = 11,079.29 - Step 5: Solve for x
x = 11,079.29/132.70 - Step 6: Final answer
x = 83.49
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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.