Finding the Fourth Proportional to 59.80, 82.99 and 55.48
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Solution
The fourth proportional to 59.80, 82.99 and 55.48 is: 76.99
Step by Step Solution
- Step 1: Write the proportion equation
59.80 : 82.99 = 55.48 : x - Step 2: Convert to fraction form
59.80/82.99 = 55.48/x - Step 3: Cross multiply
59.80x = 82.99 × 55.48 - Step 4: Simplify right side
59.80x = 4,604.29 - Step 5: Solve for x
x = 4,604.29/59.80 - Step 6: Final answer
x = 76.99
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Why These Related Problems?
These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.