Finding the Fourth Proportional to 66.05, 99.04 and 38.99
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Solution
The fourth proportional to 66.05, 99.04 and 38.99 is: 58.46
Step by Step Solution
- Step 1: Write the proportion equation
66.05 : 99.04 = 38.99 : x - Step 2: Convert to fraction form
66.05/99.04 = 38.99/x - Step 3: Cross multiply
66.05x = 99.04 × 38.99 - Step 4: Simplify right side
66.05x = 3,860.98 - Step 5: Solve for x
x = 3,860.98/66.05 - Step 6: Final answer
x = 58.46
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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.