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Finding the Fourth Proportional to 305.96, 458.54 and 132.42

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Solution

The fourth proportional to 305.96, 458.54 and 132.42 is: 198.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    305.96 : 458.54 = 132.42 : x
  2. Step 2: Convert to fraction form
    305.96/458.54 = 132.42/x
  3. Step 3: Cross multiply
    305.96x = 458.54 × 132.42
  4. Step 4: Simplify right side
    305.96x = 60,719.87
  5. Step 5: Solve for x
    x = 60,719.87/305.96
  6. Step 6: Final answer
    x = 198.46

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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.