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Finding the Fourth Proportional to 533.68, 736.56 and 386.98

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Solution

The fourth proportional to 533.68, 736.56 and 386.98 is: 534.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    533.68 : 736.56 = 386.98 : x
  2. Step 2: Convert to fraction form
    533.68/736.56 = 386.98/x
  3. Step 3: Cross multiply
    533.68x = 736.56 × 386.98
  4. Step 4: Simplify right side
    533.68x = 285,033.99
  5. Step 5: Solve for x
    x = 285,033.99/533.68
  6. Step 6: Final answer
    x = 534.09

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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.