Finding the Fourth Proportional to 66.36, 99.08 and 59.99
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Solution
The fourth proportional to 66.36, 99.08 and 59.99 is: 89.56
Step by Step Solution
- Step 1: Write the proportion equation
66.36 : 99.08 = 59.99 : x - Step 2: Convert to fraction form
66.36/99.08 = 59.99/x - Step 3: Cross multiply
66.36x = 99.08 × 59.99 - Step 4: Simplify right side
66.36x = 5,943.46 - Step 5: Solve for x
x = 5,943.46/66.36 - Step 6: Final answer
x = 89.56
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.