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Finding the Fourth Proportional to 533.91, 737.45 and 386.31

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Solution

The fourth proportional to 533.91, 737.45 and 386.31 is: 533.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    533.91 : 737.45 = 386.31 : x
  2. Step 2: Convert to fraction form
    533.91/737.45 = 386.31/x
  3. Step 3: Cross multiply
    533.91x = 737.45 × 386.31
  4. Step 4: Simplify right side
    533.91x = 284,884.31
  5. Step 5: Solve for x
    x = 284,884.31/533.91
  6. Step 6: Final answer
    x = 533.58

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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.