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Finding the Fourth Proportional to 356.34, 533.88 and 247.92

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Solution

The fourth proportional to 356.34, 533.88 and 247.92 is: 371.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    356.34 : 533.88 = 247.92 : x
  2. Step 2: Convert to fraction form
    356.34/533.88 = 247.92/x
  3. Step 3: Cross multiply
    356.34x = 533.88 × 247.92
  4. Step 4: Simplify right side
    356.34x = 132,359.53
  5. Step 5: Solve for x
    x = 132,359.53/356.34
  6. Step 6: Final answer
    x = 371.44

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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.