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Finding the Fourth Proportional to 1,677.74, 2,516.42 and 445.24

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Solution

The fourth proportional to 1,677.74, 2,516.42 and 445.24 is: 667.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,677.74 : 2,516.42 = 445.24 : x
  2. Step 2: Convert to fraction form
    1,677.74/2,516.42 = 445.24/x
  3. Step 3: Cross multiply
    1,677.74x = 2,516.42 × 445.24
  4. Step 4: Simplify right side
    1,677.74x = 1,120,396.03
  5. Step 5: Solve for x
    x = 1,120,396.03/1,677.74
  6. Step 6: Final answer
    x = 667.80

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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.