Finding the Fourth Proportional to 432.77, 648.74 and 239.99
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Solution
The fourth proportional to 432.77, 648.74 and 239.99 is: 359.75
Step by Step Solution
- Step 1: Write the proportion equation
432.77 : 648.74 = 239.99 : x - Step 2: Convert to fraction form
432.77/648.74 = 239.99/x - Step 3: Cross multiply
432.77x = 648.74 × 239.99 - Step 4: Simplify right side
432.77x = 155,688.47 - Step 5: Solve for x
x = 155,688.47/432.77 - Step 6: Final answer
x = 359.75
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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.