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Finding the Fourth Proportional to 949.50, 1,309.41 and 875.03

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Solution

The fourth proportional to 949.50, 1,309.41 and 875.03 is: 1,206.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    949.50 : 1,309.41 = 875.03 : x
  2. Step 2: Convert to fraction form
    949.50/1,309.41 = 875.03/x
  3. Step 3: Cross multiply
    949.50x = 1,309.41 × 875.03
  4. Step 4: Simplify right side
    949.50x = 1,145,766.49
  5. Step 5: Solve for x
    x = 1,145,766.49/949.50
  6. Step 6: Final answer
    x = 1,206.71

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.