Finding the Fourth Proportional to 59.11, 81.54 and 54.99
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Solution
The fourth proportional to 59.11, 81.54 and 54.99 is: 75.86
Step by Step Solution
- Step 1: Write the proportion equation
59.11 : 81.54 = 54.99 : x - Step 2: Convert to fraction form
59.11/81.54 = 54.99/x - Step 3: Cross multiply
59.11x = 81.54 × 54.99 - Step 4: Simplify right side
59.11x = 4,483.88 - Step 5: Solve for x
x = 4,483.88/59.11 - Step 6: Final answer
x = 75.86
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.