Finding the Fourth Proportional to 48.03, 72.06 and 20.99
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Solution
The fourth proportional to 48.03, 72.06 and 20.99 is: 31.48
Step by Step Solution
- Step 1: Write the proportion equation
48.03 : 72.06 = 20.99 : x - Step 2: Convert to fraction form
48.03/72.06 = 20.99/x - Step 3: Cross multiply
48.03x = 72.06 × 20.99 - Step 4: Simplify right side
48.03x = 1,512.18 - Step 5: Solve for x
x = 1,512.18/48.03 - Step 6: Final answer
x = 31.48
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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.