Finding the Fourth Proportional to 56.67, 85.00 and 30.99
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Solution
The fourth proportional to 56.67, 85.00 and 30.99 is: 46.48
Step by Step Solution
- Step 1: Write the proportion equation
56.67 : 85.00 = 30.99 : x - Step 2: Convert to fraction form
56.67/85.00 = 30.99/x - Step 3: Cross multiply
56.67x = 85.00 × 30.99 - Step 4: Simplify right side
56.67x = 2,633.98 - Step 5: Solve for x
x = 2,633.98/56.67 - Step 6: Final answer
x = 46.48
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Double scale
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Similar ratio
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1.5x scale
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.