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Finding the Fourth Proportional to 779.09, 1,174.48 and 726.23

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Solution

The fourth proportional to 779.09, 1,174.48 and 726.23 is: 1,094.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    779.09 : 1,174.48 = 726.23 : x
  2. Step 2: Convert to fraction form
    779.09/1,174.48 = 726.23/x
  3. Step 3: Cross multiply
    779.09x = 1,174.48 × 726.23
  4. Step 4: Simplify right side
    779.09x = 852,943.73
  5. Step 5: Solve for x
    x = 852,943.73/779.09
  6. Step 6: Final answer
    x = 1,094.80

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.