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Finding the Fourth Proportional to 186.08, 279.09 and 117.39

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Solution

The fourth proportional to 186.08, 279.09 and 117.39 is: 176.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    186.08 : 279.09 = 117.39 : x
  2. Step 2: Convert to fraction form
    186.08/279.09 = 117.39/x
  3. Step 3: Cross multiply
    186.08x = 279.09 × 117.39
  4. Step 4: Simplify right side
    186.08x = 32,762.38
  5. Step 5: Solve for x
    x = 32,762.38/186.08
  6. Step 6: Final answer
    x = 176.06

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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.