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Finding the Fourth Proportional to 1,168.44, 1,749.80 and 756.34

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Solution

The fourth proportional to 1,168.44, 1,749.80 and 756.34 is: 1,132.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,168.44 : 1,749.80 = 756.34 : x
  2. Step 2: Convert to fraction form
    1,168.44/1,749.80 = 756.34/x
  3. Step 3: Cross multiply
    1,168.44x = 1,749.80 × 756.34
  4. Step 4: Simplify right side
    1,168.44x = 1,323,443.73
  5. Step 5: Solve for x
    x = 1,323,443.73/1,168.44
  6. Step 6: Final answer
    x = 1,132.66

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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.