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Finding the Fourth Proportional to 703.38, 1,049.51 and 699.30

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Solution

The fourth proportional to 703.38, 1,049.51 and 699.30 is: 1,043.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    703.38 : 1,049.51 = 699.30 : x
  2. Step 2: Convert to fraction form
    703.38/1,049.51 = 699.30/x
  3. Step 3: Cross multiply
    703.38x = 1,049.51 × 699.30
  4. Step 4: Simplify right side
    703.38x = 733,918.85
  5. Step 5: Solve for x
    x = 733,918.85/703.38
  6. Step 6: Final answer
    x = 1,043.42

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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.