Finding the Fourth Proportional to 147.70, 221.33 and 122.99
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Solution
The fourth proportional to 147.70, 221.33 and 122.99 is: 184.31
Step by Step Solution
- Step 1: Write the proportion equation
147.70 : 221.33 = 122.99 : x - Step 2: Convert to fraction form
147.70/221.33 = 122.99/x - Step 3: Cross multiply
147.70x = 221.33 × 122.99 - Step 4: Simplify right side
147.70x = 27,221.38 - Step 5: Solve for x
x = 27,221.38/147.70 - Step 6: Final answer
x = 184.31
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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.