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Finding the Fourth Proportional to 794.34, 1,090.31 and 760.51

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Solution

The fourth proportional to 794.34, 1,090.31 and 760.51 is: 1,043.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    794.34 : 1,090.31 = 760.51 : x
  2. Step 2: Convert to fraction form
    794.34/1,090.31 = 760.51/x
  3. Step 3: Cross multiply
    794.34x = 1,090.31 × 760.51
  4. Step 4: Simplify right side
    794.34x = 829,191.66
  5. Step 5: Solve for x
    x = 829,191.66/794.34
  6. Step 6: Final answer
    x = 1,043.87

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.