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Finding the Fourth Proportional to 330.92, 454.18 and 303.12

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Solution

The fourth proportional to 330.92, 454.18 and 303.12 is: 416.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    330.92 : 454.18 = 303.12 : x
  2. Step 2: Convert to fraction form
    330.92/454.18 = 303.12/x
  3. Step 3: Cross multiply
    330.92x = 454.18 × 303.12
  4. Step 4: Simplify right side
    330.92x = 137,671.04
  5. Step 5: Solve for x
    x = 137,671.04/330.92
  6. Step 6: Final answer
    x = 416.03

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.