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Finding the Fourth Proportional to 925.82, 1,276.15 and 626.97

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Solution

The fourth proportional to 925.82, 1,276.15 and 626.97 is: 864.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    925.82 : 1,276.15 = 626.97 : x
  2. Step 2: Convert to fraction form
    925.82/1,276.15 = 626.97/x
  3. Step 3: Cross multiply
    925.82x = 1,276.15 × 626.97
  4. Step 4: Simplify right side
    925.82x = 800,107.77
  5. Step 5: Solve for x
    x = 800,107.77/925.82
  6. Step 6: Final answer
    x = 864.22

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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.