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Finding the Fourth Proportional to 193.98, 267.68 and 106.64

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Solution

The fourth proportional to 193.98, 267.68 and 106.64 is: 147.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    193.98 : 267.68 = 106.64 : x
  2. Step 2: Convert to fraction form
    193.98/267.68 = 106.64/x
  3. Step 3: Cross multiply
    193.98x = 267.68 × 106.64
  4. Step 4: Simplify right side
    193.98x = 28,545.40
  5. Step 5: Solve for x
    x = 28,545.40/193.98
  6. Step 6: Final answer
    x = 147.16

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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.