Finding the Fourth Proportional to 50.76, 76.16 and 29.09
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Solution
The fourth proportional to 50.76, 76.16 and 29.09 is: 43.65
Step by Step Solution
- Step 1: Write the proportion equation
50.76 : 76.16 = 29.09 : x - Step 2: Convert to fraction form
50.76/76.16 = 29.09/x - Step 3: Cross multiply
50.76x = 76.16 × 29.09 - Step 4: Simplify right side
50.76x = 2,215.76 - Step 5: Solve for x
x = 2,215.76/50.76 - Step 6: Final answer
x = 43.65
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.