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Finding the Fourth Proportional to 533.12, 735.98 and 445.64

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Solution

The fourth proportional to 533.12, 735.98 and 445.64 is: 615.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    533.12 : 735.98 = 445.64 : x
  2. Step 2: Convert to fraction form
    533.12/735.98 = 445.64/x
  3. Step 3: Cross multiply
    533.12x = 735.98 × 445.64
  4. Step 4: Simplify right side
    533.12x = 327,976.22
  5. Step 5: Solve for x
    x = 327,976.22/533.12
  6. Step 6: Final answer
    x = 615.21

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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.