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Finding the Fourth Proportional to 533.39, 735.10 and 385.77

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Solution

The fourth proportional to 533.39, 735.10 and 385.77 is: 531.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    533.39 : 735.10 = 385.77 : x
  2. Step 2: Convert to fraction form
    533.39/735.10 = 385.77/x
  3. Step 3: Cross multiply
    533.39x = 735.10 × 385.77
  4. Step 4: Simplify right side
    533.39x = 283,578.56
  5. Step 5: Solve for x
    x = 283,578.56/533.39
  6. Step 6: Final answer
    x = 531.65

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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.