Finding the Fourth Proportional to 53.05, 79.58 and 16.99
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Solution
The fourth proportional to 53.05, 79.58 and 16.99 is: 25.49
Step by Step Solution
- Step 1: Write the proportion equation
53.05 : 79.58 = 16.99 : x - Step 2: Convert to fraction form
53.05/79.58 = 16.99/x - Step 3: Cross multiply
53.05x = 79.58 × 16.99 - Step 4: Simplify right side
53.05x = 1,352.06 - Step 5: Solve for x
x = 1,352.06/53.05 - Step 6: Final answer
x = 25.49
Related Problems
Find fourth proportional to 26.53, 39.79 and 8.50
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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.