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Finding the Fourth Proportional to 186.30, 280.49 and 154.08

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Solution

The fourth proportional to 186.30, 280.49 and 154.08 is: 231.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    186.30 : 280.49 = 154.08 : x
  2. Step 2: Convert to fraction form
    186.30/280.49 = 154.08/x
  3. Step 3: Cross multiply
    186.30x = 280.49 × 154.08
  4. Step 4: Simplify right side
    186.30x = 43,217.13
  5. Step 5: Solve for x
    x = 43,217.13/186.30
  6. Step 6: Final answer
    x = 231.98

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.