Finding the Fourth Proportional to 458.74, 633.18 and 318.88
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Solution
The fourth proportional to 458.74, 633.18 and 318.88 is: 440.14
Step by Step Solution
- Step 1: Write the proportion equation
458.74 : 633.18 = 318.88 : x - Step 2: Convert to fraction form
458.74/633.18 = 318.88/x - Step 3: Cross multiply
458.74x = 633.18 × 318.88 - Step 4: Simplify right side
458.74x = 201,908.44 - Step 5: Solve for x
x = 201,908.44/458.74 - Step 6: Final answer
x = 440.14
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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.