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Finding the Fourth Proportional to 330.40, 455.96 and 183.05

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Solution

The fourth proportional to 330.40, 455.96 and 183.05 is: 252.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    330.40 : 455.96 = 183.05 : x
  2. Step 2: Convert to fraction form
    330.40/455.96 = 183.05/x
  3. Step 3: Cross multiply
    330.40x = 455.96 × 183.05
  4. Step 4: Simplify right side
    330.40x = 83,462.34
  5. Step 5: Solve for x
    x = 83,462.34/330.40
  6. Step 6: Final answer
    x = 252.61

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.