Finding the Fourth Proportional to 135.79, 203.56 and 77.99
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Solution
The fourth proportional to 135.79, 203.56 and 77.99 is: 116.91
Step by Step Solution
- Step 1: Write the proportion equation
135.79 : 203.56 = 77.99 : x - Step 2: Convert to fraction form
135.79/203.56 = 77.99/x - Step 3: Cross multiply
135.79x = 203.56 × 77.99 - Step 4: Simplify right side
135.79x = 15,874.43 - Step 5: Solve for x
x = 15,874.43/135.79 - Step 6: Final answer
x = 116.91
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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.