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Finding the Fourth Proportional to 926.37, 1,277.91 and 677.43

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Solution

The fourth proportional to 926.37, 1,277.91 and 677.43 is: 934.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    926.37 : 1,277.91 = 677.43 : x
  2. Step 2: Convert to fraction form
    926.37/1,277.91 = 677.43/x
  3. Step 3: Cross multiply
    926.37x = 1,277.91 × 677.43
  4. Step 4: Simplify right side
    926.37x = 865,694.57
  5. Step 5: Solve for x
    x = 865,694.57/926.37
  6. Step 6: Final answer
    x = 934.50

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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.