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Finding the Fourth Proportional to 196.09, 293.69 and 127.40

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Solution

The fourth proportional to 196.09, 293.69 and 127.40 is: 190.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    196.09 : 293.69 = 127.40 : x
  2. Step 2: Convert to fraction form
    196.09/293.69 = 127.40/x
  3. Step 3: Cross multiply
    196.09x = 293.69 × 127.40
  4. Step 4: Simplify right side
    196.09x = 37,416.11
  5. Step 5: Solve for x
    x = 37,416.11/196.09
  6. Step 6: Final answer
    x = 190.82

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.