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Finding the Fourth Proportional to 739.25, 1,106.82 and 479.55

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Solution

The fourth proportional to 739.25, 1,106.82 and 479.55 is: 717.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    739.25 : 1,106.82 = 479.55 : x
  2. Step 2: Convert to fraction form
    739.25/1,106.82 = 479.55/x
  3. Step 3: Cross multiply
    739.25x = 1,106.82 × 479.55
  4. Step 4: Simplify right side
    739.25x = 530,775.53
  5. Step 5: Solve for x
    x = 530,775.53/739.25
  6. Step 6: Final answer
    x = 717.99

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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.