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Finding the Fourth Proportional to 533.54, 800.28 and 318.49

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Solution

The fourth proportional to 533.54, 800.28 and 318.49 is: 477.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    533.54 : 800.28 = 318.49 : x
  2. Step 2: Convert to fraction form
    533.54/800.28 = 318.49/x
  3. Step 3: Cross multiply
    533.54x = 800.28 × 318.49
  4. Step 4: Simplify right side
    533.54x = 254,881.18
  5. Step 5: Solve for x
    x = 254,881.18/533.54
  6. Step 6: Final answer
    x = 477.72

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.