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Finding the Fourth Proportional to 243.03, 366.05 and 221.52

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Solution

The fourth proportional to 243.03, 366.05 and 221.52 is: 333.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    243.03 : 366.05 = 221.52 : x
  2. Step 2: Convert to fraction form
    243.03/366.05 = 221.52/x
  3. Step 3: Cross multiply
    243.03x = 366.05 × 221.52
  4. Step 4: Simplify right side
    243.03x = 81,085.01
  5. Step 5: Solve for x
    x = 81,085.01/243.03
  6. Step 6: Final answer
    x = 333.65

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.