Finding the Fourth Proportional to 66.42, 99.50 and 41.99
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Solution
The fourth proportional to 66.42, 99.50 and 41.99 is: 62.89
Step by Step Solution
- Step 1: Write the proportion equation
66.42 : 99.50 = 41.99 : x - Step 2: Convert to fraction form
66.42/99.50 = 41.99/x - Step 3: Cross multiply
66.42x = 99.50 × 41.99 - Step 4: Simplify right side
66.42x = 4,177.30 - Step 5: Solve for x
x = 4,177.30/66.42 - Step 6: Final answer
x = 62.89
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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.