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Finding the Fourth Proportional to 263.04, 362.64 and 221.76

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Solution

The fourth proportional to 263.04, 362.64 and 221.76 is: 305.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    263.04 : 362.64 = 221.76 : x
  2. Step 2: Convert to fraction form
    263.04/362.64 = 221.76/x
  3. Step 3: Cross multiply
    263.04x = 362.64 × 221.76
  4. Step 4: Simplify right side
    263.04x = 80,419.05
  5. Step 5: Solve for x
    x = 80,419.05/263.04
  6. Step 6: Final answer
    x = 305.73

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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.