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Finding the Fourth Proportional to 533.42, 736.25 and 312.39

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Solution

The fourth proportional to 533.42, 736.25 and 312.39 is: 431.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    533.42 : 736.25 = 312.39 : x
  2. Step 2: Convert to fraction form
    533.42/736.25 = 312.39/x
  3. Step 3: Cross multiply
    533.42x = 736.25 × 312.39
  4. Step 4: Simplify right side
    533.42x = 229,997.14
  5. Step 5: Solve for x
    x = 229,997.14/533.42
  6. Step 6: Final answer
    x = 431.17

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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.