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Finding the Fourth Proportional to 1,668.88, 2,502.46 and 889.32

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Solution

The fourth proportional to 1,668.88, 2,502.46 and 889.32 is: 1,333.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,668.88 : 2,502.46 = 889.32 : x
  2. Step 2: Convert to fraction form
    1,668.88/2,502.46 = 889.32/x
  3. Step 3: Cross multiply
    1,668.88x = 2,502.46 × 889.32
  4. Step 4: Simplify right side
    1,668.88x = 2,225,487.73
  5. Step 5: Solve for x
    x = 2,225,487.73/1,668.88
  6. Step 6: Final answer
    x = 1,333.52

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.