Finding the Fourth Proportional to 61.08, 84.23 and 42.63
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Solution
The fourth proportional to 61.08, 84.23 and 42.63 is: 58.79
Step by Step Solution
- Step 1: Write the proportion equation
61.08 : 84.23 = 42.63 : x - Step 2: Convert to fraction form
61.08/84.23 = 42.63/x - Step 3: Cross multiply
61.08x = 84.23 × 42.63 - Step 4: Simplify right side
61.08x = 3,590.72 - Step 5: Solve for x
x = 3,590.72/61.08 - Step 6: Final answer
x = 58.79
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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.