Finding the Fourth Proportional to 42.14, 58.16 and 25.79
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Solution
The fourth proportional to 42.14, 58.16 and 25.79 is: 35.59
Step by Step Solution
- Step 1: Write the proportion equation
42.14 : 58.16 = 25.79 : x - Step 2: Convert to fraction form
42.14/58.16 = 25.79/x - Step 3: Cross multiply
42.14x = 58.16 × 25.79 - Step 4: Simplify right side
42.14x = 1,499.82 - Step 5: Solve for x
x = 1,499.82/42.14 - Step 6: Final answer
x = 35.59
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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.