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Finding the Fourth Proportional to 303.98, 455.86 and 130.73

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Solution

The fourth proportional to 303.98, 455.86 and 130.73 is: 196.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    303.98 : 455.86 = 130.73 : x
  2. Step 2: Convert to fraction form
    303.98/455.86 = 130.73/x
  3. Step 3: Cross multiply
    303.98x = 455.86 × 130.73
  4. Step 4: Simplify right side
    303.98x = 59,594.58
  5. Step 5: Solve for x
    x = 59,594.58/303.98
  6. Step 6: Final answer
    x = 196.05

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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.