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Finding the Fourth Proportional to 757.39, 1,141.27 and 623.44

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Solution

The fourth proportional to 757.39, 1,141.27 and 623.44 is: 939.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    757.39 : 1,141.27 = 623.44 : x
  2. Step 2: Convert to fraction form
    757.39/1,141.27 = 623.44/x
  3. Step 3: Cross multiply
    757.39x = 1,141.27 × 623.44
  4. Step 4: Simplify right side
    757.39x = 711,513.37
  5. Step 5: Solve for x
    x = 711,513.37/757.39
  6. Step 6: Final answer
    x = 939.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.