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Finding the Fourth Proportional to 193.66, 291.03 and 187.18

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Solution

The fourth proportional to 193.66, 291.03 and 187.18 is: 281.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    193.66 : 291.03 = 187.18 : x
  2. Step 2: Convert to fraction form
    193.66/291.03 = 187.18/x
  3. Step 3: Cross multiply
    193.66x = 291.03 × 187.18
  4. Step 4: Simplify right side
    193.66x = 54,475.00
  5. Step 5: Solve for x
    x = 54,475.00/193.66
  6. Step 6: Final answer
    x = 281.29

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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.