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Finding the Fourth Proportional to 1,173.06, 1,759.86 and 556.61

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Solution

The fourth proportional to 1,173.06, 1,759.86 and 556.61 is: 835.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,173.06 : 1,759.86 = 556.61 : x
  2. Step 2: Convert to fraction form
    1,173.06/1,759.86 = 556.61/x
  3. Step 3: Cross multiply
    1,173.06x = 1,759.86 × 556.61
  4. Step 4: Simplify right side
    1,173.06x = 979,546.88
  5. Step 5: Solve for x
    x = 979,546.88/1,173.06
  6. Step 6: Final answer
    x = 835.04

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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.