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Finding the Fourth Proportional to 699.06, 1,043.79 and 673.86

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Solution

The fourth proportional to 699.06, 1,043.79 and 673.86 is: 1,006.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    699.06 : 1,043.79 = 673.86 : x
  2. Step 2: Convert to fraction form
    699.06/1,043.79 = 673.86/x
  3. Step 3: Cross multiply
    699.06x = 1,043.79 × 673.86
  4. Step 4: Simplify right side
    699.06x = 703,368.33
  5. Step 5: Solve for x
    x = 703,368.33/699.06
  6. Step 6: Final answer
    x = 1,006.16

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.