Finding the Fourth Proportional to 65.64, 98.36 and 39.99
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Solution
The fourth proportional to 65.64, 98.36 and 39.99 is: 59.92
Step by Step Solution
- Step 1: Write the proportion equation
65.64 : 98.36 = 39.99 : x - Step 2: Convert to fraction form
65.64/98.36 = 39.99/x - Step 3: Cross multiply
65.64x = 98.36 × 39.99 - Step 4: Simplify right side
65.64x = 3,933.42 - Step 5: Solve for x
x = 3,933.42/65.64 - Step 6: Final answer
x = 59.92
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.