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Finding the Fourth Proportional to 926.26, 1,278.57 and 794.74

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Solution

The fourth proportional to 926.26, 1,278.57 and 794.74 is: 1,097.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    926.26 : 1,278.57 = 794.74 : x
  2. Step 2: Convert to fraction form
    926.26/1,278.57 = 794.74/x
  3. Step 3: Cross multiply
    926.26x = 1,278.57 × 794.74
  4. Step 4: Simplify right side
    926.26x = 1,016,130.72
  5. Step 5: Solve for x
    x = 1,016,130.72/926.26
  6. Step 6: Final answer
    x = 1,097.03

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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.