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Finding the Fourth Proportional to 923.74, 1,274.87 and 550.53

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Solution

The fourth proportional to 923.74, 1,274.87 and 550.53 is: 759.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    923.74 : 1,274.87 = 550.53 : x
  2. Step 2: Convert to fraction form
    923.74/1,274.87 = 550.53/x
  3. Step 3: Cross multiply
    923.74x = 1,274.87 × 550.53
  4. Step 4: Simplify right side
    923.74x = 701,855.56
  5. Step 5: Solve for x
    x = 701,855.56/923.74
  6. Step 6: Final answer
    x = 759.80

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Double scale
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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.