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Finding the Fourth Proportional to 934.21, 1,289.73 and 744.82

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Solution

The fourth proportional to 934.21, 1,289.73 and 744.82 is: 1,028.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    934.21 : 1,289.73 = 744.82 : x
  2. Step 2: Convert to fraction form
    934.21/1,289.73 = 744.82/x
  3. Step 3: Cross multiply
    934.21x = 1,289.73 × 744.82
  4. Step 4: Simplify right side
    934.21x = 960,616.70
  5. Step 5: Solve for x
    x = 960,616.70/934.21
  6. Step 6: Final answer
    x = 1,028.27

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1.5x scale

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.