Finding the Fourth Proportional to 133.76, 184.58 and 77.75
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Solution
The fourth proportional to 133.76, 184.58 and 77.75 is: 107.28
Step by Step Solution
- Step 1: Write the proportion equation
133.76 : 184.58 = 77.75 : x - Step 2: Convert to fraction form
133.76/184.58 = 77.75/x - Step 3: Cross multiply
133.76x = 184.58 × 77.75 - Step 4: Simplify right side
133.76x = 14,349.78 - Step 5: Solve for x
x = 14,349.78/133.76 - Step 6: Final answer
x = 107.28
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.