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Finding the Fourth Proportional to 1,603.26, 2,406.78 and 739.26

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Solution

The fourth proportional to 1,603.26, 2,406.78 and 739.26 is: 1,109.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,603.26 : 2,406.78 = 739.26 : x
  2. Step 2: Convert to fraction form
    1,603.26/2,406.78 = 739.26/x
  3. Step 3: Cross multiply
    1,603.26x = 2,406.78 × 739.26
  4. Step 4: Simplify right side
    1,603.26x = 1,779,236.18
  5. Step 5: Solve for x
    x = 1,779,236.18/1,603.26
  6. Step 6: Final answer
    x = 1,109.76

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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.