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Finding the Fourth Proportional to 305.28, 454.80 and 299.04

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Solution

The fourth proportional to 305.28, 454.80 and 299.04 is: 445.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    305.28 : 454.80 = 299.04 : x
  2. Step 2: Convert to fraction form
    305.28/454.80 = 299.04/x
  3. Step 3: Cross multiply
    305.28x = 454.80 × 299.04
  4. Step 4: Simplify right side
    305.28x = 136,003.39
  5. Step 5: Solve for x
    x = 136,003.39/305.28
  6. Step 6: Final answer
    x = 445.50

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.