Finding the Fourth Proportional to 102.18, 153.28 and 30.06
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Solution
The fourth proportional to 102.18, 153.28 and 30.06 is: 45.09
Step by Step Solution
- Step 1: Write the proportion equation
102.18 : 153.28 = 30.06 : x - Step 2: Convert to fraction form
102.18/153.28 = 30.06/x - Step 3: Cross multiply
102.18x = 153.28 × 30.06 - Step 4: Simplify right side
102.18x = 4,607.60 - Step 5: Solve for x
x = 4,607.60/102.18 - Step 6: Final answer
x = 45.09
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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.