Finding the Fourth Proportional to 17.10, 25.65 and 8.99
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Solution
The fourth proportional to 17.10, 25.65 and 8.99 is: 13.48
Step by Step Solution
- Step 1: Write the proportion equation
17.10 : 25.65 = 8.99 : x - Step 2: Convert to fraction form
17.10/25.65 = 8.99/x - Step 3: Cross multiply
17.10x = 25.65 × 8.99 - Step 4: Simplify right side
17.10x = 230.47 - Step 5: Solve for x
x = 230.47/17.10 - Step 6: Final answer
x = 13.48
Related Problems
Find fourth proportional to 8.55, 12.83 and 4.49
Half scale
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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.