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Finding the Fourth Proportional to 675.20, 1,011.92 and 367.13

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Solution

The fourth proportional to 675.20, 1,011.92 and 367.13 is: 550.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    675.20 : 1,011.92 = 367.13 : x
  2. Step 2: Convert to fraction form
    675.20/1,011.92 = 367.13/x
  3. Step 3: Cross multiply
    675.20x = 1,011.92 × 367.13
  4. Step 4: Simplify right side
    675.20x = 371,499.29
  5. Step 5: Solve for x
    x = 371,499.29/675.20
  6. Step 6: Final answer
    x = 550.21

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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.