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Finding the Fourth Proportional to 305.30, 458.08 and 223.11

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Solution

The fourth proportional to 305.30, 458.08 and 223.11 is: 334.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    305.30 : 458.08 = 223.11 : x
  2. Step 2: Convert to fraction form
    305.30/458.08 = 223.11/x
  3. Step 3: Cross multiply
    305.30x = 458.08 × 223.11
  4. Step 4: Simplify right side
    305.30x = 102,201.67
  5. Step 5: Solve for x
    x = 102,201.67/305.30
  6. Step 6: Final answer
    x = 334.76

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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.