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Finding the Fourth Proportional to 533.08, 735.32 and 311.88

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Solution

The fourth proportional to 533.08, 735.32 and 311.88 is: 430.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    533.08 : 735.32 = 311.88 : x
  2. Step 2: Convert to fraction form
    533.08/735.32 = 311.88/x
  3. Step 3: Cross multiply
    533.08x = 735.32 × 311.88
  4. Step 4: Simplify right side
    533.08x = 229,330.82
  5. Step 5: Solve for x
    x = 229,330.82/533.08
  6. Step 6: Final answer
    x = 430.20

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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.