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Finding the Fourth Proportional to 922.92, 1,272.27 and 756.87

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Solution

The fourth proportional to 922.92, 1,272.27 and 756.87 is: 1,043.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    922.92 : 1,272.27 = 756.87 : x
  2. Step 2: Convert to fraction form
    922.92/1,272.27 = 756.87/x
  3. Step 3: Cross multiply
    922.92x = 1,272.27 × 756.87
  4. Step 4: Simplify right side
    922.92x = 962,942.99
  5. Step 5: Solve for x
    x = 962,942.99/922.92
  6. Step 6: Final answer
    x = 1,043.37

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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.