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Finding the Fourth Proportional to 655.57, 983.40 and 222.72

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Solution

The fourth proportional to 655.57, 983.40 and 222.72 is: 334.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    655.57 : 983.40 = 222.72 : x
  2. Step 2: Convert to fraction form
    655.57/983.40 = 222.72/x
  3. Step 3: Cross multiply
    655.57x = 983.40 × 222.72
  4. Step 4: Simplify right side
    655.57x = 219,022.85
  5. Step 5: Solve for x
    x = 219,022.85/655.57
  6. Step 6: Final answer
    x = 334.10

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.