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Finding the Fourth Proportional to 533.38, 736.01 and 312.30

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Solution

The fourth proportional to 533.38, 736.01 and 312.30 is: 430.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    533.38 : 736.01 = 312.30 : x
  2. Step 2: Convert to fraction form
    533.38/736.01 = 312.30/x
  3. Step 3: Cross multiply
    533.38x = 736.01 × 312.30
  4. Step 4: Simplify right side
    533.38x = 229,855.92
  5. Step 5: Solve for x
    x = 229,855.92/533.38
  6. Step 6: Final answer
    x = 430.94

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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.