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Finding the Fourth Proportional to 193.50, 291.71 and 190.62

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Solution

The fourth proportional to 193.50, 291.71 and 190.62 is: 287.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    193.50 : 291.71 = 190.62 : x
  2. Step 2: Convert to fraction form
    193.50/291.71 = 190.62/x
  3. Step 3: Cross multiply
    193.50x = 291.71 × 190.62
  4. Step 4: Simplify right side
    193.50x = 55,604.81
  5. Step 5: Solve for x
    x = 55,604.81/193.50
  6. Step 6: Final answer
    x = 287.36

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.