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Finding the Fourth Proportional to 937.38, 1,292.83 and 728.19

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Solution

The fourth proportional to 937.38, 1,292.83 and 728.19 is: 1,004.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    937.38 : 1,292.83 = 728.19 : x
  2. Step 2: Convert to fraction form
    937.38/1,292.83 = 728.19/x
  3. Step 3: Cross multiply
    937.38x = 1,292.83 × 728.19
  4. Step 4: Simplify right side
    937.38x = 941,425.88
  5. Step 5: Solve for x
    x = 941,425.88/937.38
  6. Step 6: Final answer
    x = 1,004.32

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Half scale
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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.