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Finding the Fourth Proportional to 194.42, 268.40 and 124.59

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Solution

The fourth proportional to 194.42, 268.40 and 124.59 is: 172.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    194.42 : 268.40 = 124.59 : x
  2. Step 2: Convert to fraction form
    194.42/268.40 = 124.59/x
  3. Step 3: Cross multiply
    194.42x = 268.40 × 124.59
  4. Step 4: Simplify right side
    194.42x = 33,439.33
  5. Step 5: Solve for x
    x = 33,439.33/194.42
  6. Step 6: Final answer
    x = 172.00

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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.