Finding the Fourth Proportional to 390.99, 586.58 and 174.63
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Solution
The fourth proportional to 390.99, 586.58 and 174.63 is: 261.99
Step by Step Solution
- Step 1: Write the proportion equation
390.99 : 586.58 = 174.63 : x - Step 2: Convert to fraction form
390.99/586.58 = 174.63/x - Step 3: Cross multiply
390.99x = 586.58 × 174.63 - Step 4: Simplify right side
390.99x = 102,434.47 - Step 5: Solve for x
x = 102,434.47/390.99 - Step 6: Final answer
x = 261.99
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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.