Finding the Fourth Proportional to 50.16, 74.79 and 45.60
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Solution
The fourth proportional to 50.16, 74.79 and 45.60 is: 67.99
Step by Step Solution
- Step 1: Write the proportion equation
50.16 : 74.79 = 45.60 : x - Step 2: Convert to fraction form
50.16/74.79 = 45.60/x - Step 3: Cross multiply
50.16x = 74.79 × 45.60 - Step 4: Simplify right side
50.16x = 3,410.42 - Step 5: Solve for x
x = 3,410.42/50.16 - Step 6: Final answer
x = 67.99
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.