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Finding the Fourth Proportional to 1,140.88, 1,709.70 and 833.44

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Solution

The fourth proportional to 1,140.88, 1,709.70 and 833.44 is: 1,248.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,140.88 : 1,709.70 = 833.44 : x
  2. Step 2: Convert to fraction form
    1,140.88/1,709.70 = 833.44/x
  3. Step 3: Cross multiply
    1,140.88x = 1,709.70 × 833.44
  4. Step 4: Simplify right side
    1,140.88x = 1,424,932.37
  5. Step 5: Solve for x
    x = 1,424,932.37/1,140.88
  6. Step 6: Final answer
    x = 1,248.98

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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.