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Finding the Fourth Proportional to 196.19, 293.81 and 155.63

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Solution

The fourth proportional to 196.19, 293.81 and 155.63 is: 233.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    196.19 : 293.81 = 155.63 : x
  2. Step 2: Convert to fraction form
    196.19/293.81 = 155.63/x
  3. Step 3: Cross multiply
    196.19x = 293.81 × 155.63
  4. Step 4: Simplify right side
    196.19x = 45,724.18
  5. Step 5: Solve for x
    x = 45,724.18/196.19
  6. Step 6: Final answer
    x = 233.07

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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.