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Finding the Fourth Proportional to 791.39, 1,092.16 and 437.36

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Solution

The fourth proportional to 791.39, 1,092.16 and 437.36 is: 603.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    791.39 : 1,092.16 = 437.36 : x
  2. Step 2: Convert to fraction form
    791.39/1,092.16 = 437.36/x
  3. Step 3: Cross multiply
    791.39x = 1,092.16 × 437.36
  4. Step 4: Simplify right side
    791.39x = 477,662.18
  5. Step 5: Solve for x
    x = 477,662.18/791.39
  6. Step 6: Final answer
    x = 603.57

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Double scale
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1.5x scale

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.