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Finding the Fourth Proportional to 450.19, 674.81 and 206.51

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Solution

The fourth proportional to 450.19, 674.81 and 206.51 is: 309.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    450.19 : 674.81 = 206.51 : x
  2. Step 2: Convert to fraction form
    450.19/674.81 = 206.51/x
  3. Step 3: Cross multiply
    450.19x = 674.81 × 206.51
  4. Step 4: Simplify right side
    450.19x = 139,353.98
  5. Step 5: Solve for x
    x = 139,353.98/450.19
  6. Step 6: Final answer
    x = 309.55

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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.