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Finding the Fourth Proportional to 943.30, 1,298.67 and 743.77

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Solution

The fourth proportional to 943.30, 1,298.67 and 743.77 is: 1,023.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    943.30 : 1,298.67 = 743.77 : x
  2. Step 2: Convert to fraction form
    943.30/1,298.67 = 743.77/x
  3. Step 3: Cross multiply
    943.30x = 1,298.67 × 743.77
  4. Step 4: Simplify right side
    943.30x = 965,905.29
  5. Step 5: Solve for x
    x = 965,905.29/943.30
  6. Step 6: Final answer
    x = 1,023.97

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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.