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Finding the Fourth Proportional to 969.44, 1,335.37 and 902.39

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Solution

The fourth proportional to 969.44, 1,335.37 and 902.39 is: 1,243.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    969.44 : 1,335.37 = 902.39 : x
  2. Step 2: Convert to fraction form
    969.44/1,335.37 = 902.39/x
  3. Step 3: Cross multiply
    969.44x = 1,335.37 × 902.39
  4. Step 4: Simplify right side
    969.44x = 1,205,024.53
  5. Step 5: Solve for x
    x = 1,205,024.53/969.44
  6. Step 6: Final answer
    x = 1,243.01

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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.