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Finding the Fourth Proportional to 193.15, 266.47 and 119.43

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Solution

The fourth proportional to 193.15, 266.47 and 119.43 is: 164.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    193.15 : 266.47 = 119.43 : x
  2. Step 2: Convert to fraction form
    193.15/266.47 = 119.43/x
  3. Step 3: Cross multiply
    193.15x = 266.47 × 119.43
  4. Step 4: Simplify right side
    193.15x = 31,824.51
  5. Step 5: Solve for x
    x = 31,824.51/193.15
  6. Step 6: Final answer
    x = 164.77

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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.