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Finding the Fourth Proportional to 193.93, 290.50 and 99.84

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Solution

The fourth proportional to 193.93, 290.50 and 99.84 is: 149.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    193.93 : 290.50 = 99.84 : x
  2. Step 2: Convert to fraction form
    193.93/290.50 = 99.84/x
  3. Step 3: Cross multiply
    193.93x = 290.50 × 99.84
  4. Step 4: Simplify right side
    193.93x = 29,003.52
  5. Step 5: Solve for x
    x = 29,003.52/193.93
  6. Step 6: Final answer
    x = 149.56

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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.