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Finding the Fourth Proportional to 465.80, 698.40 and 222.68

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Solution

The fourth proportional to 465.80, 698.40 and 222.68 is: 333.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    465.80 : 698.40 = 222.68 : x
  2. Step 2: Convert to fraction form
    465.80/698.40 = 222.68/x
  3. Step 3: Cross multiply
    465.80x = 698.40 × 222.68
  4. Step 4: Simplify right side
    465.80x = 155,519.71
  5. Step 5: Solve for x
    x = 155,519.71/465.80
  6. Step 6: Final answer
    x = 333.88

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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.