Finding the Fourth Proportional to 58.44, 87.64 and 19.91
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Solution
The fourth proportional to 58.44, 87.64 and 19.91 is: 29.86
Step by Step Solution
- Step 1: Write the proportion equation
58.44 : 87.64 = 19.91 : x - Step 2: Convert to fraction form
58.44/87.64 = 19.91/x - Step 3: Cross multiply
58.44x = 87.64 × 19.91 - Step 4: Simplify right side
58.44x = 1,745.13 - Step 5: Solve for x
x = 1,745.13/58.44 - Step 6: Final answer
x = 29.86
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.