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Finding the Fourth Proportional to 1,133.33, 1,699.91 and 311.53

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Solution

The fourth proportional to 1,133.33, 1,699.91 and 311.53 is: 467.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,133.33 : 1,699.91 = 311.53 : x
  2. Step 2: Convert to fraction form
    1,133.33/1,699.91 = 311.53/x
  3. Step 3: Cross multiply
    1,133.33x = 1,699.91 × 311.53
  4. Step 4: Simplify right side
    1,133.33x = 529,567.15
  5. Step 5: Solve for x
    x = 529,567.15/1,133.33
  6. Step 6: Final answer
    x = 467.27

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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.