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Finding the Fourth Proportional to 450.05, 674.56 and 206.60

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Solution

The fourth proportional to 450.05, 674.56 and 206.60 is: 309.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    450.05 : 674.56 = 206.60 : x
  2. Step 2: Convert to fraction form
    450.05/674.56 = 206.60/x
  3. Step 3: Cross multiply
    450.05x = 674.56 × 206.60
  4. Step 4: Simplify right side
    450.05x = 139,364.10
  5. Step 5: Solve for x
    x = 139,364.10/450.05
  6. Step 6: Final answer
    x = 309.66

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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.