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Finding the Fourth Proportional to 873.38, 1,311.73 and 750.26

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Solution

The fourth proportional to 873.38, 1,311.73 and 750.26 is: 1,126.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    873.38 : 1,311.73 = 750.26 : x
  2. Step 2: Convert to fraction form
    873.38/1,311.73 = 750.26/x
  3. Step 3: Cross multiply
    873.38x = 1,311.73 × 750.26
  4. Step 4: Simplify right side
    873.38x = 984,138.55
  5. Step 5: Solve for x
    x = 984,138.55/873.38
  6. Step 6: Final answer
    x = 1,126.82

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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.