Finding the Fourth Proportional to 99.66, 137.52 and 55.99
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Solution
The fourth proportional to 99.66, 137.52 and 55.99 is: 77.27
Step by Step Solution
- Step 1: Write the proportion equation
99.66 : 137.52 = 55.99 : x - Step 2: Convert to fraction form
99.66/137.52 = 55.99/x - Step 3: Cross multiply
99.66x = 137.52 × 55.99 - Step 4: Simplify right side
99.66x = 7,700.30 - Step 5: Solve for x
x = 7,700.30/99.66 - Step 6: Final answer
x = 77.27
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.