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Finding the Fourth Proportional to 492.21, 733.05 and 479.21

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Solution

The fourth proportional to 492.21, 733.05 and 479.21 is: 713.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    492.21 : 733.05 = 479.21 : x
  2. Step 2: Convert to fraction form
    492.21/733.05 = 479.21/x
  3. Step 3: Cross multiply
    492.21x = 733.05 × 479.21
  4. Step 4: Simplify right side
    492.21x = 351,281.23
  5. Step 5: Solve for x
    x = 351,281.23/492.21
  6. Step 6: Final answer
    x = 713.68

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.