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Finding the Fourth Proportional to 655.68, 983.72 and 222.84

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Solution

The fourth proportional to 655.68, 983.72 and 222.84 is: 334.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    655.68 : 983.72 = 222.84 : x
  2. Step 2: Convert to fraction form
    655.68/983.72 = 222.84/x
  3. Step 3: Cross multiply
    655.68x = 983.72 × 222.84
  4. Step 4: Simplify right side
    655.68x = 219,212.16
  5. Step 5: Solve for x
    x = 219,212.16/655.68
  6. Step 6: Final answer
    x = 334.33

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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.