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Finding the Fourth Proportional to 969.39, 1,337.75 and 527.27

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Solution

The fourth proportional to 969.39, 1,337.75 and 527.27 is: 727.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    969.39 : 1,337.75 = 527.27 : x
  2. Step 2: Convert to fraction form
    969.39/1,337.75 = 527.27/x
  3. Step 3: Cross multiply
    969.39x = 1,337.75 × 527.27
  4. Step 4: Simplify right side
    969.39x = 705,348.09
  5. Step 5: Solve for x
    x = 705,348.09/969.39
  6. Step 6: Final answer
    x = 727.62

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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.