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Finding the Fourth Proportional to 791.88, 1,092.64 and 460.32

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Solution

The fourth proportional to 791.88, 1,092.64 and 460.32 is: 635.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    791.88 : 1,092.64 = 460.32 : x
  2. Step 2: Convert to fraction form
    791.88/1,092.64 = 460.32/x
  3. Step 3: Cross multiply
    791.88x = 1,092.64 × 460.32
  4. Step 4: Simplify right side
    791.88x = 502,964.04
  5. Step 5: Solve for x
    x = 502,964.04/791.88
  6. Step 6: Final answer
    x = 635.15

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.