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Finding the Fourth Proportional to 738.67, 1,107.86 and 276.37

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Solution

The fourth proportional to 738.67, 1,107.86 and 276.37 is: 414.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    738.67 : 1,107.86 = 276.37 : x
  2. Step 2: Convert to fraction form
    738.67/1,107.86 = 276.37/x
  3. Step 3: Cross multiply
    738.67x = 1,107.86 × 276.37
  4. Step 4: Simplify right side
    738.67x = 306,179.27
  5. Step 5: Solve for x
    x = 306,179.27/738.67
  6. Step 6: Final answer
    x = 414.50

Related Problems

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Half scale
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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.