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Finding the Fourth Proportional to 533.20, 735.70 and 346.67

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Solution

The fourth proportional to 533.20, 735.70 and 346.67 is: 478.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    533.20 : 735.70 = 346.67 : x
  2. Step 2: Convert to fraction form
    533.20/735.70 = 346.67/x
  3. Step 3: Cross multiply
    533.20x = 735.70 × 346.67
  4. Step 4: Simplify right side
    533.20x = 255,045.12
  5. Step 5: Solve for x
    x = 255,045.12/533.20
  6. Step 6: Final answer
    x = 478.33

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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.