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Finding the Fourth Proportional to 1,163.74, 1,738.89 and 880.45

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Solution

The fourth proportional to 1,163.74, 1,738.89 and 880.45 is: 1,315.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,163.74 : 1,738.89 = 880.45 : x
  2. Step 2: Convert to fraction form
    1,163.74/1,738.89 = 880.45/x
  3. Step 3: Cross multiply
    1,163.74x = 1,738.89 × 880.45
  4. Step 4: Simplify right side
    1,163.74x = 1,531,005.70
  5. Step 5: Solve for x
    x = 1,531,005.70/1,163.74
  6. Step 6: Final answer
    x = 1,315.59

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.