Home / 1,133.11-1,699.49-311.39

Finding the Fourth Proportional to 1,133.11, 1,699.49 and 311.39

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Solution

The fourth proportional to 1,133.11, 1,699.49 and 311.39 is: 467.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,133.11 : 1,699.49 = 311.39 : x
  2. Step 2: Convert to fraction form
    1,133.11/1,699.49 = 311.39/x
  3. Step 3: Cross multiply
    1,133.11x = 1,699.49 × 311.39
  4. Step 4: Simplify right side
    1,133.11x = 529,202.63
  5. Step 5: Solve for x
    x = 529,202.63/1,133.11
  6. Step 6: Final answer
    x = 467.04

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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.