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Finding the Fourth Proportional to 655.80, 983.88 and 222.96

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Solution

The fourth proportional to 655.80, 983.88 and 222.96 is: 334.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    655.80 : 983.88 = 222.96 : x
  2. Step 2: Convert to fraction form
    655.80/983.88 = 222.96/x
  3. Step 3: Cross multiply
    655.80x = 983.88 × 222.96
  4. Step 4: Simplify right side
    655.80x = 219,365.88
  5. Step 5: Solve for x
    x = 219,365.88/655.80
  6. Step 6: Final answer
    x = 334.50

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1.5x scale

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.