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Finding the Fourth Proportional to 1,677.81, 2,516.74 and 445.22

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Solution

The fourth proportional to 1,677.81, 2,516.74 and 445.22 is: 667.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,677.81 : 2,516.74 = 445.22 : x
  2. Step 2: Convert to fraction form
    1,677.81/2,516.74 = 445.22/x
  3. Step 3: Cross multiply
    1,677.81x = 2,516.74 × 445.22
  4. Step 4: Simplify right side
    1,677.81x = 1,120,489.29
  5. Step 5: Solve for x
    x = 1,120,489.29/1,677.81
  6. Step 6: Final answer
    x = 667.83

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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.