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Finding the Fourth Proportional to 681.04, 1,021.36 and 242.22

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Solution

The fourth proportional to 681.04, 1,021.36 and 242.22 is: 363.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    681.04 : 1,021.36 = 242.22 : x
  2. Step 2: Convert to fraction form
    681.04/1,021.36 = 242.22/x
  3. Step 3: Cross multiply
    681.04x = 1,021.36 × 242.22
  4. Step 4: Simplify right side
    681.04x = 247,388.88
  5. Step 5: Solve for x
    x = 247,388.88/681.04
  6. Step 6: Final answer
    x = 363.25

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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.