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Finding the Fourth Proportional to 455.53, 683.22 and 130.83

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Solution

The fourth proportional to 455.53, 683.22 and 130.83 is: 196.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    455.53 : 683.22 = 130.83 : x
  2. Step 2: Convert to fraction form
    455.53/683.22 = 130.83/x
  3. Step 3: Cross multiply
    455.53x = 683.22 × 130.83
  4. Step 4: Simplify right side
    455.53x = 89,382.26
  5. Step 5: Solve for x
    x = 89,382.26/455.53
  6. Step 6: Final answer
    x = 196.22

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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.