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Finding the Fourth Proportional to 949.57, 1,424.62 and 677.40

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Solution

The fourth proportional to 949.57, 1,424.62 and 677.40 is: 1,016.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    949.57 : 1,424.62 = 677.40 : x
  2. Step 2: Convert to fraction form
    949.57/1,424.62 = 677.40/x
  3. Step 3: Cross multiply
    949.57x = 1,424.62 × 677.40
  4. Step 4: Simplify right side
    949.57x = 965,037.59
  5. Step 5: Solve for x
    x = 965,037.59/949.57
  6. Step 6: Final answer
    x = 1,016.29

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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.