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Finding the Fourth Proportional to 533.76, 736.56 and 300.88

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Solution

The fourth proportional to 533.76, 736.56 and 300.88 is: 415.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    533.76 : 736.56 = 300.88 : x
  2. Step 2: Convert to fraction form
    533.76/736.56 = 300.88/x
  3. Step 3: Cross multiply
    533.76x = 736.56 × 300.88
  4. Step 4: Simplify right side
    533.76x = 221,616.17
  5. Step 5: Solve for x
    x = 221,616.17/533.76
  6. Step 6: Final answer
    x = 415.20

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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.