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Finding the Fourth Proportional to 492.21, 738.27 and 356.85

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Solution

The fourth proportional to 492.21, 738.27 and 356.85 is: 535.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    492.21 : 738.27 = 356.85 : x
  2. Step 2: Convert to fraction form
    492.21/738.27 = 356.85/x
  3. Step 3: Cross multiply
    492.21x = 738.27 × 356.85
  4. Step 4: Simplify right side
    492.21x = 263,451.65
  5. Step 5: Solve for x
    x = 263,451.65/492.21
  6. Step 6: Final answer
    x = 535.24

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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.