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Finding the Fourth Proportional to 1,232.25, 1,697.22 and 969.81

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Solution

The fourth proportional to 1,232.25, 1,697.22 and 969.81 is: 1,335.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,232.25 : 1,697.22 = 969.81 : x
  2. Step 2: Convert to fraction form
    1,232.25/1,697.22 = 969.81/x
  3. Step 3: Cross multiply
    1,232.25x = 1,697.22 × 969.81
  4. Step 4: Simplify right side
    1,232.25x = 1,645,980.93
  5. Step 5: Solve for x
    x = 1,645,980.93/1,232.25
  6. Step 6: Final answer
    x = 1,335.75

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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.