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Finding the Fourth Proportional to 1,204.71, 1,662.48 and 673.61

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Solution

The fourth proportional to 1,204.71, 1,662.48 and 673.61 is: 929.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,204.71 : 1,662.48 = 673.61 : x
  2. Step 2: Convert to fraction form
    1,204.71/1,662.48 = 673.61/x
  3. Step 3: Cross multiply
    1,204.71x = 1,662.48 × 673.61
  4. Step 4: Simplify right side
    1,204.71x = 1,119,854.84
  5. Step 5: Solve for x
    x = 1,119,854.84/1,204.71
  6. Step 6: Final answer
    x = 929.56

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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.