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Finding the Fourth Proportional to 193.52, 267.64 and 172.76

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Solution

The fourth proportional to 193.52, 267.64 and 172.76 is: 238.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    193.52 : 267.64 = 172.76 : x
  2. Step 2: Convert to fraction form
    193.52/267.64 = 172.76/x
  3. Step 3: Cross multiply
    193.52x = 267.64 × 172.76
  4. Step 4: Simplify right side
    193.52x = 46,235.72
  5. Step 5: Solve for x
    x = 46,235.72/193.52
  6. Step 6: Final answer
    x = 238.93

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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.