Finding the Fourth Proportional to 135.44, 202.80 and 84
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Solution
The fourth proportional to 135.44, 202.80 and 84 is: 125.78
Step by Step Solution
- Step 1: Write the proportion equation
135.44 : 202.80 = 84 : x - Step 2: Convert to fraction form
135.44/202.80 = 84/x - Step 3: Cross multiply
135.44x = 202.80 × 84 - Step 4: Simplify right side
135.44x = 17,035.20 - Step 5: Solve for x
x = 17,035.20/135.44 - Step 6: Final answer
x = 125.78
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.