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Finding the Fourth Proportional to 738.14, 1,107.21 and 251.51

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Solution

The fourth proportional to 738.14, 1,107.21 and 251.51 is: 377.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    738.14 : 1,107.21 = 251.51 : x
  2. Step 2: Convert to fraction form
    738.14/1,107.21 = 251.51/x
  3. Step 3: Cross multiply
    738.14x = 1,107.21 × 251.51
  4. Step 4: Simplify right side
    738.14x = 278,474.39
  5. Step 5: Solve for x
    x = 278,474.39/738.14
  6. Step 6: Final answer
    x = 377.27

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Double scale
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Similar ratio
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1.5x scale

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.