Finding the Fourth Proportional to 147.22, 202.80 and 122.80
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Solution
The fourth proportional to 147.22, 202.80 and 122.80 is: 169.16
Step by Step Solution
- Step 1: Write the proportion equation
147.22 : 202.80 = 122.80 : x - Step 2: Convert to fraction form
147.22/202.80 = 122.80/x - Step 3: Cross multiply
147.22x = 202.80 × 122.80 - Step 4: Simplify right side
147.22x = 24,903.84 - Step 5: Solve for x
x = 24,903.84/147.22 - Step 6: Final answer
x = 169.16
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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.