Finding the Fourth Proportional to 147.56, 203.45 and 122.99
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Solution
The fourth proportional to 147.56, 203.45 and 122.99 is: 169.57
Step by Step Solution
- Step 1: Write the proportion equation
147.56 : 203.45 = 122.99 : x - Step 2: Convert to fraction form
147.56/203.45 = 122.99/x - Step 3: Cross multiply
147.56x = 203.45 × 122.99 - Step 4: Simplify right side
147.56x = 25,020.68 - Step 5: Solve for x
x = 25,020.68/147.56 - Step 6: Final answer
x = 169.57
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.