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Finding the Fourth Proportional to 1,367.76, 2,051.10 and 791.04

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Solution

The fourth proportional to 1,367.76, 2,051.10 and 791.04 is: 1,186.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,367.76 : 2,051.10 = 791.04 : x
  2. Step 2: Convert to fraction form
    1,367.76/2,051.10 = 791.04/x
  3. Step 3: Cross multiply
    1,367.76x = 2,051.10 × 791.04
  4. Step 4: Simplify right side
    1,367.76x = 1,622,502.14
  5. Step 5: Solve for x
    x = 1,622,502.14/1,367.76
  6. Step 6: Final answer
    x = 1,186.25

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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.