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Finding the Fourth Proportional to 925.01, 1,392.98 and 804.72

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Solution

The fourth proportional to 925.01, 1,392.98 and 804.72 is: 1,211.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    925.01 : 1,392.98 = 804.72 : x
  2. Step 2: Convert to fraction form
    925.01/1,392.98 = 804.72/x
  3. Step 3: Cross multiply
    925.01x = 1,392.98 × 804.72
  4. Step 4: Simplify right side
    925.01x = 1,120,958.87
  5. Step 5: Solve for x
    x = 1,120,958.87/925.01
  6. Step 6: Final answer
    x = 1,211.83

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.