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Finding the Fourth Proportional to 739.90, 1,109.64 and 496.54

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Solution

The fourth proportional to 739.90, 1,109.64 and 496.54 is: 744.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    739.90 : 1,109.64 = 496.54 : x
  2. Step 2: Convert to fraction form
    739.90/1,109.64 = 496.54/x
  3. Step 3: Cross multiply
    739.90x = 1,109.64 × 496.54
  4. Step 4: Simplify right side
    739.90x = 550,980.65
  5. Step 5: Solve for x
    x = 550,980.65/739.90
  6. Step 6: Final answer
    x = 744.67

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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.