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Finding the Fourth Proportional to 492.11, 682.01 and 482.90

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Solution

The fourth proportional to 492.11, 682.01 and 482.90 is: 669.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    492.11 : 682.01 = 482.90 : x
  2. Step 2: Convert to fraction form
    492.11/682.01 = 482.90/x
  3. Step 3: Cross multiply
    492.11x = 682.01 × 482.90
  4. Step 4: Simplify right side
    492.11x = 329,336.80
  5. Step 5: Solve for x
    x = 329,336.80/492.11
  6. Step 6: Final answer
    x = 669.24

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.