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Finding the Fourth Proportional to 1,046.86, 1,443.70 and 673.18

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Solution

The fourth proportional to 1,046.86, 1,443.70 and 673.18 is: 928.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,046.86 : 1,443.70 = 673.18 : x
  2. Step 2: Convert to fraction form
    1,046.86/1,443.70 = 673.18/x
  3. Step 3: Cross multiply
    1,046.86x = 1,443.70 × 673.18
  4. Step 4: Simplify right side
    1,046.86x = 971,869.97
  5. Step 5: Solve for x
    x = 971,869.97/1,046.86
  6. Step 6: Final answer
    x = 928.37

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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.