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Finding the Fourth Proportional to 1,134.26, 1,700.87 and 672.11

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Solution

The fourth proportional to 1,134.26, 1,700.87 and 672.11 is: 1,007.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,134.26 : 1,700.87 = 672.11 : x
  2. Step 2: Convert to fraction form
    1,134.26/1,700.87 = 672.11/x
  3. Step 3: Cross multiply
    1,134.26x = 1,700.87 × 672.11
  4. Step 4: Simplify right side
    1,134.26x = 1,143,166.25
  5. Step 5: Solve for x
    x = 1,143,166.25/1,134.26
  6. Step 6: Final answer
    x = 1,007.85

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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.