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Finding the Fourth Proportional to 455.94, 684.03 and 131.34

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Solution

The fourth proportional to 455.94, 684.03 and 131.34 is: 197.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    455.94 : 684.03 = 131.34 : x
  2. Step 2: Convert to fraction form
    455.94/684.03 = 131.34/x
  3. Step 3: Cross multiply
    455.94x = 684.03 × 131.34
  4. Step 4: Simplify right side
    455.94x = 89,840.50
  5. Step 5: Solve for x
    x = 89,840.50/455.94
  6. Step 6: Final answer
    x = 197.04

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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.