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Finding the Fourth Proportional to 178.22, 265.58 and 172.42

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Solution

The fourth proportional to 178.22, 265.58 and 172.42 is: 256.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    178.22 : 265.58 = 172.42 : x
  2. Step 2: Convert to fraction form
    178.22/265.58 = 172.42/x
  3. Step 3: Cross multiply
    178.22x = 265.58 × 172.42
  4. Step 4: Simplify right side
    178.22x = 45,791.30
  5. Step 5: Solve for x
    x = 45,791.30/178.22
  6. Step 6: Final answer
    x = 256.94

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.