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Finding the Fourth Proportional to 533.39, 735.72 and 312.12

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Solution

The fourth proportional to 533.39, 735.72 and 312.12 is: 430.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    533.39 : 735.72 = 312.12 : x
  2. Step 2: Convert to fraction form
    533.39/735.72 = 312.12/x
  3. Step 3: Cross multiply
    533.39x = 735.72 × 312.12
  4. Step 4: Simplify right side
    533.39x = 229,631.76
  5. Step 5: Solve for x
    x = 229,631.76/533.39
  6. Step 6: Final answer
    x = 430.52

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1.5x scale

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.