Finding the Fourth Proportional to 50.81, 70.12 and 28.98
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Solution
The fourth proportional to 50.81, 70.12 and 28.98 is: 39.99
Step by Step Solution
- Step 1: Write the proportion equation
50.81 : 70.12 = 28.98 : x - Step 2: Convert to fraction form
50.81/70.12 = 28.98/x - Step 3: Cross multiply
50.81x = 70.12 × 28.98 - Step 4: Simplify right side
50.81x = 2,032.08 - Step 5: Solve for x
x = 2,032.08/50.81 - Step 6: Final answer
x = 39.99
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.