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Finding the Fourth Proportional to 194.04, 267.54 and 128.43

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Solution

The fourth proportional to 194.04, 267.54 and 128.43 is: 177.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    194.04 : 267.54 = 128.43 : x
  2. Step 2: Convert to fraction form
    194.04/267.54 = 128.43/x
  3. Step 3: Cross multiply
    194.04x = 267.54 × 128.43
  4. Step 4: Simplify right side
    194.04x = 34,360.16
  5. Step 5: Solve for x
    x = 34,360.16/194.04
  6. Step 6: Final answer
    x = 177.08

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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.