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Finding the Fourth Proportional to 969.30, 1,337.31 and 576.18

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Solution

The fourth proportional to 969.30, 1,337.31 and 576.18 is: 794.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    969.30 : 1,337.31 = 576.18 : x
  2. Step 2: Convert to fraction form
    969.30/1,337.31 = 576.18/x
  3. Step 3: Cross multiply
    969.30x = 1,337.31 × 576.18
  4. Step 4: Simplify right side
    969.30x = 770,531.28
  5. Step 5: Solve for x
    x = 770,531.28/969.30
  6. Step 6: Final answer
    x = 794.94

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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.