Finding the Fourth Proportional to 423.20, 583.93 and 305.35
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Solution
The fourth proportional to 423.20, 583.93 and 305.35 is: 421.32
Step by Step Solution
- Step 1: Write the proportion equation
423.20 : 583.93 = 305.35 : x - Step 2: Convert to fraction form
423.20/583.93 = 305.35/x - Step 3: Cross multiply
423.20x = 583.93 × 305.35 - Step 4: Simplify right side
423.20x = 178,302.24 - Step 5: Solve for x
x = 178,302.24/423.20 - Step 6: Final answer
x = 421.32
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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.