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Finding the Fourth Proportional to 220.63, 304.56 and 173.89

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Solution

The fourth proportional to 220.63, 304.56 and 173.89 is: 240.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    220.63 : 304.56 = 173.89 : x
  2. Step 2: Convert to fraction form
    220.63/304.56 = 173.89/x
  3. Step 3: Cross multiply
    220.63x = 304.56 × 173.89
  4. Step 4: Simplify right side
    220.63x = 52,959.94
  5. Step 5: Solve for x
    x = 52,959.94/220.63
  6. Step 6: Final answer
    x = 240.04

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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.