Finding the Fourth Proportional to 383.64, 529.43 and 208.99
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Solution
The fourth proportional to 383.64, 529.43 and 208.99 is: 288.41
Step by Step Solution
- Step 1: Write the proportion equation
383.64 : 529.43 = 208.99 : x - Step 2: Convert to fraction form
383.64/529.43 = 208.99/x - Step 3: Cross multiply
383.64x = 529.43 × 208.99 - Step 4: Simplify right side
383.64x = 110,645.58 - Step 5: Solve for x
x = 110,645.58/383.64 - Step 6: Final answer
x = 288.41
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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.