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Finding the Fourth Proportional to 535.64, 739.08 and 388.33

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Solution

The fourth proportional to 535.64, 739.08 and 388.33 is: 535.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    535.64 : 739.08 = 388.33 : x
  2. Step 2: Convert to fraction form
    535.64/739.08 = 388.33/x
  3. Step 3: Cross multiply
    535.64x = 739.08 × 388.33
  4. Step 4: Simplify right side
    535.64x = 287,005.09
  5. Step 5: Solve for x
    x = 287,005.09/535.64
  6. Step 6: Final answer
    x = 535.82

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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.