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Finding the Fourth Proportional to 533.08, 735.72 and 311.99

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Solution

The fourth proportional to 533.08, 735.72 and 311.99 is: 430.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    533.08 : 735.72 = 311.99 : x
  2. Step 2: Convert to fraction form
    533.08/735.72 = 311.99/x
  3. Step 3: Cross multiply
    533.08x = 735.72 × 311.99
  4. Step 4: Simplify right side
    533.08x = 229,536.85
  5. Step 5: Solve for x
    x = 229,536.85/533.08
  6. Step 6: Final answer
    x = 430.59

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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.