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Finding the Fourth Proportional to 533.36, 735.39 and 393.45

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Solution

The fourth proportional to 533.36, 735.39 and 393.45 is: 542.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    533.36 : 735.39 = 393.45 : x
  2. Step 2: Convert to fraction form
    533.36/735.39 = 393.45/x
  3. Step 3: Cross multiply
    533.36x = 735.39 × 393.45
  4. Step 4: Simplify right side
    533.36x = 289,339.20
  5. Step 5: Solve for x
    x = 289,339.20/533.36
  6. Step 6: Final answer
    x = 542.49

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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.