Finding the Fourth Proportional to 147.22, 203.07 and 122.80
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Solution
The fourth proportional to 147.22, 203.07 and 122.80 is: 169.39
Step by Step Solution
- Step 1: Write the proportion equation
147.22 : 203.07 = 122.80 : x - Step 2: Convert to fraction form
147.22/203.07 = 122.80/x - Step 3: Cross multiply
147.22x = 203.07 × 122.80 - Step 4: Simplify right side
147.22x = 24,937.00 - Step 5: Solve for x
x = 24,937.00/147.22 - Step 6: Final answer
x = 169.39
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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.