Home / 739.03-1,108.85-300.55

Finding the Fourth Proportional to 739.03, 1,108.85 and 300.55

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Solution

The fourth proportional to 739.03, 1,108.85 and 300.55 is: 450.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    739.03 : 1,108.85 = 300.55 : x
  2. Step 2: Convert to fraction form
    739.03/1,108.85 = 300.55/x
  3. Step 3: Cross multiply
    739.03x = 1,108.85 × 300.55
  4. Step 4: Simplify right side
    739.03x = 333,264.87
  5. Step 5: Solve for x
    x = 333,264.87/739.03
  6. Step 6: Final answer
    x = 450.95

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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.