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Finding the Fourth Proportional to 434.75, 599.82 and 287.48

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Solution

The fourth proportional to 434.75, 599.82 and 287.48 is: 396.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    434.75 : 599.82 = 287.48 : x
  2. Step 2: Convert to fraction form
    434.75/599.82 = 287.48/x
  3. Step 3: Cross multiply
    434.75x = 599.82 × 287.48
  4. Step 4: Simplify right side
    434.75x = 172,436.25
  5. Step 5: Solve for x
    x = 172,436.25/434.75
  6. Step 6: Final answer
    x = 396.63

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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.