Finding the Fourth Proportional to 162.18, 243.33 and 90.09
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Solution
The fourth proportional to 162.18, 243.33 and 90.09 is: 135.17
Step by Step Solution
- Step 1: Write the proportion equation
162.18 : 243.33 = 90.09 : x - Step 2: Convert to fraction form
162.18/243.33 = 90.09/x - Step 3: Cross multiply
162.18x = 243.33 × 90.09 - Step 4: Simplify right side
162.18x = 21,921.60 - Step 5: Solve for x
x = 21,921.60/162.18 - Step 6: Final answer
x = 135.17
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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.