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Finding the Fourth Proportional to 265.55, 366.96 and 221.24

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Solution

The fourth proportional to 265.55, 366.96 and 221.24 is: 305.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    265.55 : 366.96 = 221.24 : x
  2. Step 2: Convert to fraction form
    265.55/366.96 = 221.24/x
  3. Step 3: Cross multiply
    265.55x = 366.96 × 221.24
  4. Step 4: Simplify right side
    265.55x = 81,186.23
  5. Step 5: Solve for x
    x = 81,186.23/265.55
  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.