Finding the Fourth Proportional to 42.12, 62.91 and 40.23
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Solution
The fourth proportional to 42.12, 62.91 and 40.23 is: 60.09
Step by Step Solution
- Step 1: Write the proportion equation
42.12 : 62.91 = 40.23 : x - Step 2: Convert to fraction form
42.12/62.91 = 40.23/x - Step 3: Cross multiply
42.12x = 62.91 × 40.23 - Step 4: Simplify right side
42.12x = 2,530.87 - Step 5: Solve for x
x = 2,530.87/42.12 - Step 6: Final answer
x = 60.09
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These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.