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Finding the Fourth Proportional to 1,177.56, 1,764.81 and 629.37

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Solution

The fourth proportional to 1,177.56, 1,764.81 and 629.37 is: 943.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,177.56 : 1,764.81 = 629.37 : x
  2. Step 2: Convert to fraction form
    1,177.56/1,764.81 = 629.37/x
  3. Step 3: Cross multiply
    1,177.56x = 1,764.81 × 629.37
  4. Step 4: Simplify right side
    1,177.56x = 1,110,718.47
  5. Step 5: Solve for x
    x = 1,110,718.47/1,177.56
  6. Step 6: Final answer
    x = 943.24

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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.