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Finding the Fourth Proportional to 186.03, 279.30 and 94.79

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Solution

The fourth proportional to 186.03, 279.30 and 94.79 is: 142.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    186.03 : 279.30 = 94.79 : x
  2. Step 2: Convert to fraction form
    186.03/279.30 = 94.79/x
  3. Step 3: Cross multiply
    186.03x = 279.30 × 94.79
  4. Step 4: Simplify right side
    186.03x = 26,475.90
  5. Step 5: Solve for x
    x = 26,475.90/186.03
  6. Step 6: Final answer
    x = 142.32

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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.