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Finding the Fourth Proportional to 533.30, 735.89 and 312.24

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Solution

The fourth proportional to 533.30, 735.89 and 312.24 is: 430.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    533.30 : 735.89 = 312.24 : x
  2. Step 2: Convert to fraction form
    533.30/735.89 = 312.24/x
  3. Step 3: Cross multiply
    533.30x = 735.89 × 312.24
  4. Step 4: Simplify right side
    533.30x = 229,774.29
  5. Step 5: Solve for x
    x = 229,774.29/533.30
  6. Step 6: Final answer
    x = 430.85

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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.