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Finding the Fourth Proportional to 923.26, 1,274.50 and 550.36

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Solution

The fourth proportional to 923.26, 1,274.50 and 550.36 is: 759.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    923.26 : 1,274.50 = 550.36 : x
  2. Step 2: Convert to fraction form
    923.26/1,274.50 = 550.36/x
  3. Step 3: Cross multiply
    923.26x = 1,274.50 × 550.36
  4. Step 4: Simplify right side
    923.26x = 701,433.82
  5. Step 5: Solve for x
    x = 701,433.82/923.26
  6. Step 6: Final answer
    x = 759.74

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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.