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Finding the Fourth Proportional to 194.50, 267.60 and 145.18

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Solution

The fourth proportional to 194.50, 267.60 and 145.18 is: 199.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    194.50 : 267.60 = 145.18 : x
  2. Step 2: Convert to fraction form
    194.50/267.60 = 145.18/x
  3. Step 3: Cross multiply
    194.50x = 267.60 × 145.18
  4. Step 4: Simplify right side
    194.50x = 38,850.17
  5. Step 5: Solve for x
    x = 38,850.17/194.50
  6. Step 6: Final answer
    x = 199.74

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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.