Finding the Fourth Proportional to 55.68, 76.87 and 34.99
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Solution
The fourth proportional to 55.68, 76.87 and 34.99 is: 48.31
Step by Step Solution
- Step 1: Write the proportion equation
55.68 : 76.87 = 34.99 : x - Step 2: Convert to fraction form
55.68/76.87 = 34.99/x - Step 3: Cross multiply
55.68x = 76.87 × 34.99 - Step 4: Simplify right side
55.68x = 2,689.68 - Step 5: Solve for x
x = 2,689.68/55.68 - Step 6: Final answer
x = 48.31
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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.