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Finding the Fourth Proportional to 186.03, 279.18 and 155.61

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Solution

The fourth proportional to 186.03, 279.18 and 155.61 is: 233.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    186.03 : 279.18 = 155.61 : x
  2. Step 2: Convert to fraction form
    186.03/279.18 = 155.61/x
  3. Step 3: Cross multiply
    186.03x = 279.18 × 155.61
  4. Step 4: Simplify right side
    186.03x = 43,443.20
  5. Step 5: Solve for x
    x = 43,443.20/186.03
  6. Step 6: Final answer
    x = 233.53

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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.