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Finding the Fourth Proportional to 1,668.09, 2,302.25 and 969.87

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Solution

The fourth proportional to 1,668.09, 2,302.25 and 969.87 is: 1,338.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,668.09 : 2,302.25 = 969.87 : x
  2. Step 2: Convert to fraction form
    1,668.09/2,302.25 = 969.87/x
  3. Step 3: Cross multiply
    1,668.09x = 2,302.25 × 969.87
  4. Step 4: Simplify right side
    1,668.09x = 2,232,878.36
  5. Step 5: Solve for x
    x = 2,232,878.36/1,668.09
  6. Step 6: Final answer
    x = 1,338.58

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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.