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Finding the Fourth Proportional to 450.52, 675.28 and 206.80

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Solution

The fourth proportional to 450.52, 675.28 and 206.80 is: 309.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    450.52 : 675.28 = 206.80 : x
  2. Step 2: Convert to fraction form
    450.52/675.28 = 206.80/x
  3. Step 3: Cross multiply
    450.52x = 675.28 × 206.80
  4. Step 4: Simplify right side
    450.52x = 139,647.90
  5. Step 5: Solve for x
    x = 139,647.90/450.52
  6. Step 6: Final answer
    x = 309.97

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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.