Finding the Fourth Proportional to 147.20, 203.08 and 98.08
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Solution
The fourth proportional to 147.20, 203.08 and 98.08 is: 135.31
Step by Step Solution
- Step 1: Write the proportion equation
147.20 : 203.08 = 98.08 : x - Step 2: Convert to fraction form
147.20/203.08 = 98.08/x - Step 3: Cross multiply
147.20x = 203.08 × 98.08 - Step 4: Simplify right side
147.20x = 19,918.09 - Step 5: Solve for x
x = 19,918.09/147.20 - Step 6: Final answer
x = 135.31
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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.