Finding the Fourth Proportional to 42.04, 63.12 and 30.70
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Solution
The fourth proportional to 42.04, 63.12 and 30.70 is: 46.09
Step by Step Solution
- Step 1: Write the proportion equation
42.04 : 63.12 = 30.70 : x - Step 2: Convert to fraction form
42.04/63.12 = 30.70/x - Step 3: Cross multiply
42.04x = 63.12 × 30.70 - Step 4: Simplify right side
42.04x = 1,937.78 - Step 5: Solve for x
x = 1,937.78/42.04 - Step 6: Final answer
x = 46.09
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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.