Finding the Fourth Proportional to 47.99, 71.99 and 30.88
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Solution
The fourth proportional to 47.99, 71.99 and 30.88 is: 46.32
Step by Step Solution
- Step 1: Write the proportion equation
47.99 : 71.99 = 30.88 : x - Step 2: Convert to fraction form
47.99/71.99 = 30.88/x - Step 3: Cross multiply
47.99x = 71.99 × 30.88 - Step 4: Simplify right side
47.99x = 2,223.10 - Step 5: Solve for x
x = 2,223.10/47.99 - Step 6: Final answer
x = 46.32
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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.