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Finding the Fourth Proportional to 533.28, 736.03 and 309.35

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Solution

The fourth proportional to 533.28, 736.03 and 309.35 is: 426.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    533.28 : 736.03 = 309.35 : x
  2. Step 2: Convert to fraction form
    533.28/736.03 = 309.35/x
  3. Step 3: Cross multiply
    533.28x = 736.03 × 309.35
  4. Step 4: Simplify right side
    533.28x = 227,693.11
  5. Step 5: Solve for x
    x = 227,693.11/533.28
  6. Step 6: Final answer
    x = 426.96

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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.