Finding the Fourth Proportional to 431.99, 646.97 and 302.12
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Solution
The fourth proportional to 431.99, 646.97 and 302.12 is: 452.47
Step by Step Solution
- Step 1: Write the proportion equation
431.99 : 646.97 = 302.12 : x - Step 2: Convert to fraction form
431.99/646.97 = 302.12/x - Step 3: Cross multiply
431.99x = 646.97 × 302.12 - Step 4: Simplify right side
431.99x = 195,462.58 - Step 5: Solve for x
x = 195,462.58/431.99 - Step 6: Final answer
x = 452.47
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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.